111112112111012 has 6 divisors (see below), whose sum is σ = 194446196194278. Its totient is φ = 55556056055504.

The previous prime is 111112112111009. The next prime is 111112112111029. The reversal of 111112112111012 is 210111211211111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79788770191936 + 31323341919076 = 8932456^2 + 5596726^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13889014013873 + ... + 13889014013880.

It is an arithmetic number, because the mean of its divisors is an integer number (32407699365713).

Almost surely, 2^{111112112111012} is an apocalyptic number.

It is an amenable number.

111112112111012 is a deficient number, since it is larger than the sum of its proper divisors (83334084083266).

111112112111012 is a wasteful number, since it uses less digits than its factorization.

111112112111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27778028027757 (or 27778028027755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 111112112111012 its reverse (210111211211111), we get a palindrome (321223323322123).

The spelling of 111112112111012 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred twelve million, one hundred eleven thousand, twelve".