111312023212012 has 48 divisors (see below), whose sum is σ = 222762748552960. Its totient is φ = 47675435429952.

The previous prime is 111312023212001. The next prime is 111312023212057. The reversal of 111312023212012 is 210212320213111.

It is a happy number.

111312023212012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640450939 + ... + 640624717.

Almost surely, 2^{111312023212012} is an apocalyptic number.

It is an amenable number.

111312023212012 is an abundant number, since it is smaller than the sum of its proper divisors (111450725340948).

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

111312023212012 is a wasteful number, since it uses less digits than its factorization.

111312023212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187910 (or 187908 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 111312023212012 its reverse (210212320213111), we get a palindrome (321524343425123).

The spelling of 111312023212012 in words is "one hundred eleven trillion, three hundred twelve billion, twenty-three million, two hundred twelve thousand, twelve".