Fait général: 7812 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 7812 is a boring number.
Culture générale: 7812 is an unremarkable number.
Date historique: May 21st is the day in 1994 that the Democratic Republic of Yemen unsuccessful attempts to secede from the Republic of Yemen; a war breaks out.