general_fact: 29120 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 29120 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 29120 is an unremarkable number.
historical_date: September 22nd is the day in 1960 that the Sudanese Republic is renamed Mali after the withdrawal of Senegal from the Mali Federation.