22121111012112 has 100 divisors (see below), whose sum is σ = 73171329312576. Its totient is φ = 6320317429440.

The previous prime is 22121111012087. The next prime is 22121111012123. The reversal of 22121111012112 is 21121011112122.

It is a happy number.

22121111012112 is a `hidden beast` number, since 221 + 211 + 110 + 12 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1219187964 + ... + 1219206107.

Almost surely, 2^{22121111012112} is an apocalyptic number.

It is an amenable number.

22121111012112 is an abundant number, since it is smaller than the sum of its proper divisors (51050218300464).

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

22121111012112 is a wasteful number, since it uses less digits than its factorization.

22121111012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438394098 (or 2438394083 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 22121111012112 its reverse (21121011112122), we get a palindrome (43242122124234).

It can be divided in two parts, 2212111 and 1012112, that added together give a palindrome (3224223).

The spelling of 22121111012112 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, twelve thousand, one hundred twelve".