2021111112204 has 18 divisors (see below), whose sum is σ = 5108919755940. Its totient is φ = 673703704056.

The previous prime is 2021111112199. The next prime is 2021111112323. The reversal of 2021111112204 is 4022111111202.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 28070987634 + ... + 28070987705.

It is an arithmetic number, because the mean of its divisors is an integer number (283828875330).

Almost surely, 2^{2021111112204} is an apocalyptic number.

It is an amenable number.

2021111112204 is an abundant number, since it is smaller than the sum of its proper divisors (3087808643736).

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

2021111112204 is a wasteful number, since it uses less digits than its factorization.

2021111112204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56141975349 (or 56141975344 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2021111112204 its reverse (4022111111202), we get a palindrome (6043222223406).

The spelling of 2021111112204 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred four".