111122112112 has 20 divisors (see below), whose sum is σ = 234871737336. Its totient is φ = 50510050880.

The previous prime is 111122112107. The next prime is 111122112139. The reversal of 111122112112 is 211211221111.

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

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315687643 + ... + 315687994.

Almost surely, 2^111122112112 is an apocalyptic number.

It is an amenable number.

111122112112 is an abundant number, since it is smaller than the sum of its proper divisors (123749625224).

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

111122112112 is a wasteful number, since it uses less digits than its factorization.

111122112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631375656 (or 631375650 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 111122112112 its reverse (211211221111), we get a palindrome (322333333223).

The spelling of 111122112112 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twelve".