2021112111102 has 64 divisors (see below), whose sum is σ = 4685471391744. Its totient is φ = 569239786080.

The previous prime is 2021112111049. The next prime is 2021112111157. The reversal of 2021112111102 is 2011112111202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20726953 + ... + 20824235.

It is an arithmetic number, because the mean of its divisors is an integer number (73210490496).

Almost surely, 2^{2021112111102} is an apocalyptic number.

2021112111102 is an abundant number, since it is smaller than the sum of its proper divisors (2664359280642).

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

2021112111102 is a wasteful number, since it uses less digits than its factorization.

2021112111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104333.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2021112111102 its reverse (2011112111202), we get a palindrome (4032224222304).

The spelling of 2021112111102 in words is "two trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred two".