22111212012102 has 32 divisors (see below), whose sum is σ = 49151131918560. Its totient is φ = 7368138220320.

The previous prime is 22111212012047. The next prime is 22111212012151. The reversal of 22111212012102 is 20121021211122.

22111212012102 is a `hidden beast` number, since 221 + 11 + 21 + 201 + 210 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62761149 + ... + 63112472.

It is an arithmetic number, because the mean of its divisors is an integer number (1535972872455).

Almost surely, 2^{22111212012102} is an apocalyptic number.

22111212012102 is an abundant number, since it is smaller than the sum of its proper divisors (27039919906458).

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

22111212012102 is a wasteful number, since it uses less digits than its factorization.

22111212012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125876885 (or 125876879 counting only the distinct ones).

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

Adding to 22111212012102 its reverse (20121021211122), we get a palindrome (42232233223224).

The spelling of 22111212012102 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, one hundred two".