general_fact: 21774 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 21774 is a boring number.
trivia: 21774 is an unremarkable number.
historical_date: August 12th is the day in 1624 that the president of Louis XIII of France's royal council is arrested, leaving Cardinal Richelieu in the role of the King's principal minister.