diff --git a/moto/ec2/responses/amis.py b/moto/ec2/responses/amis.py
index 42bfba209..ab5256976 100755
--- a/moto/ec2/responses/amis.py
+++ b/moto/ec2/responses/amis.py
@@ -100,7 +100,7 @@ DESCRIBE_IMAGES_RESPONSE = """<DescribeImagesResponse xmlns="http://ec2.amazonaw
           <imageId>{{ image.id }}</imageId>
           <imageLocation>amazon/getting-started</imageLocation>
           <imageState>{{ image.state }}</imageState>
-          <imageOwnerId>111122223333</imageOwnerId>
+          <imageOwnerId>123456789012</imageOwnerId>
           <isPublic>{{ image.is_public_string }}</isPublic>
           <architecture>{{ image.architecture }}</architecture>
           <imageType>machine</imageType>
diff --git a/moto/ec2/responses/elastic_block_store.py b/moto/ec2/responses/elastic_block_store.py
index 0773ffbe2..8dfd9229c 100644
--- a/moto/ec2/responses/elastic_block_store.py
+++ b/moto/ec2/responses/elastic_block_store.py
@@ -228,7 +228,7 @@ CREATE_SNAPSHOT_RESPONSE = """<CreateSnapshotResponse xmlns="http://ec2.amazonaw
   <status>pending</status>
   <startTime>{{ snapshot.start_time}}</startTime>
   <progress>60%</progress>
-  <ownerId>111122223333</ownerId>
+  <ownerId>123456789012</ownerId>
   <volumeSize>{{ snapshot.volume.size }}</volumeSize>
   <description>{{ snapshot.description }}</description>
   <encrypted>{{ snapshot.encrypted }}</encrypted>
@@ -244,7 +244,7 @@ DESCRIBE_SNAPSHOTS_RESPONSE = """<DescribeSnapshotsResponse xmlns="http://ec2.am
              <status>{{ snapshot.status }}</status>
              <startTime>{{ snapshot.start_time}}</startTime>
              <progress>100%</progress>
-             <ownerId>111122223333</ownerId>
+             <ownerId>123456789012</ownerId>
             <volumeSize>{{ snapshot.volume.size }}</volumeSize>
              <description>{{ snapshot.description }}</description>
              <encrypted>{{ snapshot.encrypted }}</encrypted>
diff --git a/moto/ec2/responses/instances.py b/moto/ec2/responses/instances.py
index 368302235..7902dc375 100644
--- a/moto/ec2/responses/instances.py
+++ b/moto/ec2/responses/instances.py
@@ -209,7 +209,7 @@ class InstanceResponse(BaseResponse):
 EC2_RUN_INSTANCES = """<RunInstancesResponse xmlns="http://ec2.amazonaws.com/doc/2013-10-15/">
   <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId>
   <reservationId>{{ reservation.id }}</reservationId>
-  <ownerId>111122223333</ownerId>
+  <ownerId>123456789012</ownerId>
   <groupSet>
     <item>
       <groupId>sg-245f6a01</groupId>
@@ -280,7 +280,7 @@ EC2_RUN_INSTANCES = """<RunInstancesResponse xmlns="http://ec2.amazonaws.com/doc
                   <vpcId>{{ nic.subnet.vpc_id }}</vpcId>
                 {% endif %}
                 <description>Primary network interface</description>
-                <ownerId>111122223333</ownerId>
+                <ownerId>123456789012</ownerId>
                 <status>in-use</status>
                 <macAddress>1b:2b:3c:4d:5e:6f</macAddress>
                 <privateIpAddress>{{ nic.private_ip_address }}</privateIpAddress>
@@ -303,7 +303,7 @@ EC2_RUN_INSTANCES = """<RunInstancesResponse xmlns="http://ec2.amazonaws.com/doc
                 {% if nic.public_ip %}
                   <association>
                     <publicIp>{{ nic.public_ip }}</publicIp>
-                    <ipOwnerId>111122223333</ipOwnerId>
+                    <ipOwnerId>123456789012</ipOwnerId>
                   </association>
                 {% endif %}
                 <privateIpAddressesSet>
@@ -313,7 +313,7 @@ EC2_RUN_INSTANCES = """<RunInstancesResponse xmlns="http://ec2.amazonaws.com/doc
                     {% if nic.public_ip %}
                       <association>
                         <publicIp>{{ nic.public_ip }}</publicIp>
-                        <ipOwnerId>111122223333</ipOwnerId>
+                        <ipOwnerId>123456789012</ipOwnerId>
                       </association>
                     {% endif %}
                   </item>
@@ -332,7 +332,7 @@ EC2_DESCRIBE_INSTANCES = """<DescribeInstancesResponse xmlns="http://ec2.amazona
         {% for reservation in reservations %}
           <item>
             <reservationId>{{ reservation.id }}</reservationId>
-            <ownerId>111122223333</ownerId>
+            <ownerId>123456789012</ownerId>
             <groupSet>
               {% for group in reservation.dynamic_group_list %}
               <item>
@@ -441,7 +441,7 @@ EC2_DESCRIBE_INSTANCES = """<DescribeInstancesResponse xmlns="http://ec2.amazona
                             <vpcId>{{ nic.subnet.vpc_id }}</vpcId>
                           {% endif %}
                           <description>Primary network interface</description>
-                          <ownerId>111122223333</ownerId>
+                          <ownerId>123456789012</ownerId>
                           <status>in-use</status>
                           <macAddress>1b:2b:3c:4d:5e:6f</macAddress>
                           <privateIpAddress>{{ nic.private_ip_address }}</privateIpAddress>
@@ -468,7 +468,7 @@ EC2_DESCRIBE_INSTANCES = """<DescribeInstancesResponse xmlns="http://ec2.amazona
                           {% if nic.public_ip %}
                             <association>
                               <publicIp>{{ nic.public_ip }}</publicIp>
-                              <ipOwnerId>111122223333</ipOwnerId>
+                              <ipOwnerId>123456789012</ipOwnerId>
                             </association>
                           {% endif %}
                           <privateIpAddressesSet>
@@ -478,7 +478,7 @@ EC2_DESCRIBE_INSTANCES = """<DescribeInstancesResponse xmlns="http://ec2.amazona
                               {% if nic.public_ip %}
                                 <association>
                                   <publicIp>{{ nic.public_ip }}</publicIp>
-                                  <ipOwnerId>111122223333</ipOwnerId>
+                                  <ipOwnerId>123456789012</ipOwnerId>
                                 </association>
                               {% endif %}
                             </item>
diff --git a/moto/ec2/responses/security_groups.py b/moto/ec2/responses/security_groups.py
index 6f485fa31..b8cd87de8 100644
--- a/moto/ec2/responses/security_groups.py
+++ b/moto/ec2/responses/security_groups.py
@@ -142,7 +142,7 @@ DESCRIBE_SECURITY_GROUPS_RESPONSE = """<DescribeSecurityGroupsResponse xmlns="ht
    <securityGroupInfo>
       {% for group in groups %}
           <item>
-             <ownerId>111122223333</ownerId>
+             <ownerId>123456789012</ownerId>
              <groupId>{{ group.id }}</groupId>
              <groupName>{{ group.name }}</groupName>
              <groupDescription>{{ group.description }}</groupDescription>
@@ -162,7 +162,7 @@ DESCRIBE_SECURITY_GROUPS_RESPONSE = """<DescribeSecurityGroupsResponse xmlns="ht
                        <groups>
                           {% for source_group in rule.source_groups %}
                               <item>
-                                 <userId>111122223333</userId>
+                                 <userId>123456789012</userId>
                                  <groupId>{{ source_group.id }}</groupId>
                                  <groupName>{{ source_group.name }}</groupName>
                               </item>
@@ -187,7 +187,7 @@ DESCRIBE_SECURITY_GROUPS_RESPONSE = """<DescribeSecurityGroupsResponse xmlns="ht
                        <groups>
                           {% for source_group in rule.source_groups %}
                               <item>
-                                 <userId>111122223333</userId>
+                                 <userId>123456789012</userId>
                                  <groupId>{{ source_group.id }}</groupId>
                                  <groupName>{{ source_group.name }}</groupName>
                               </item>
diff --git a/moto/ec2/responses/vpc_peering_connections.py b/moto/ec2/responses/vpc_peering_connections.py
index f6bff4310..deedcc0e6 100644
--- a/moto/ec2/responses/vpc_peering_connections.py
+++ b/moto/ec2/responses/vpc_peering_connections.py
@@ -78,7 +78,7 @@ DESCRIBE_VPC_PEERING_CONNECTIONS_RESPONSE = """
           <cidrBlock>{{ vpc_pcx.vpc.cidr_block }}</cidrBlock>
         </requesterVpcInfo>
         <accepterVpcInfo>
-          <ownerId>111122223333</ownerId>
+          <ownerId>123456789012</ownerId>
           <vpcId>{{ vpc_pcx.peer_vpc.id }}</vpcId>
         </accepterVpcInfo>
         <status>
diff --git a/moto/s3/responses.py b/moto/s3/responses.py
index e123d76e1..9cc94ca03 100644
--- a/moto/s3/responses.py
+++ b/moto/s3/responses.py
@@ -985,7 +985,7 @@ S3_ALL_MULTIPARTS = """<?xml version="1.0" encoding="UTF-8"?>
     <Key>{{ upload.key_name }}</Key>
     <UploadId>{{ upload.id }}</UploadId>
     <Initiator>
-      <ID>arn:aws:iam::111122223333:user/user1-11111a31-17b5-4fb7-9df5-b111111f13de</ID>
+      <ID>arn:aws:iam::123456789012:user/user1-11111a31-17b5-4fb7-9df5-b111111f13de</ID>
       <DisplayName>user1-11111a31-17b5-4fb7-9df5-b111111f13de</DisplayName>
     </Initiator>
     <Owner>