111101111112112 has 40 divisors (see below), whose sum is σ = 234867957131520. Its totient is φ = 50491772009280.

The previous prime is 111101111111803. The next prime is 111101111112133. The reversal of 111101111112112 is 211211111101111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53560812 + ... + 55596427.

It is an arithmetic number, because the mean of its divisors is an integer number (5871698928288).

Almost surely, 2^{111101111112112} is an apocalyptic number.

It is an amenable number.

111101111112112 is an abundant number, since it is smaller than the sum of its proper divisors (123766846019408).

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

111101111112112 is a wasteful number, since it uses less digits than its factorization.

111101111112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109163041 (or 109163035 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 16.

Adding to 111101111112112 its reverse (211211111101111), we get a palindrome (322312222213223).

The spelling of 111101111112112 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".