general_fact: 12160 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 12160 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 12160 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: April 16th is the day in 1521 that Martin Luther's first appearance before the Diet of Worms to be examined by the Holy Roman Emperor Charles V and the other estates of the empire.