To check account properties you use the command lsuser and specify what property you want to see.
Checking if an account is locked
root@aix:/ # lsuser -a account_locked emerson
To calculate when was the last time an user logged in to the server, you will need to convert the time displayed. Use the command below to convert.
root@aix:/ # lsuser -a time_last_login emerson
root@aix:/ # perl -we ‘print(my $time = localtime 1279036180, “\n”)’
Tue Jul 13 10:49:40 2010