Mathematical fact: 2112 is the number of subsets of {1, 1/2, 1/3, ... 1/36} that sum to an integer.
Trivia: 2112 is an uninteresting number.
Historical date: October 12th is the day in 1983 that Japan's former Prime Minister Tanaka Kakuei is found guilty of taking a $2 million bribe from Lockheed and is sentenced to 4 years in jail.