general_fact: 4112 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4112 is the number of necklaces possible with 17 beads, each being one of 2 colors.
trivia: 4112 is a boring number.
historical_date: April 4th is the day in 1841 that William Henry Harrison dies of pneumonia becoming the first President of the United States to die in office and the one with the shortest term served.