111233131201212 has 48 divisors (see below), whose sum is σ = 266876385646080. Its totient is φ = 36032611655232.

The previous prime is 111233131201211. The next prime is 111233131201223. The reversal of 111233131201212 is 212102131332111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111233131201211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148927288 + ... + 149672319.

It is an arithmetic number, because the mean of its divisors is an integer number (5559924700960).

Almost surely, 2^{111233131201212} is an apocalyptic number.

111233131201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111233131201212 is an abundant number, since it is smaller than the sum of its proper divisors (155643254444868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111233131201212 is a wasteful number, since it uses less digits than its factorization.

111233131201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298600490 (or 298600488 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 111233131201212 its reverse (212102131332111), we get a palindrome (323335262533323).

The spelling of 111233131201212 in words is "one hundred eleven trillion, two hundred thirty-three billion, one hundred thirty-one million, two hundred one thousand, two hundred twelve".