22112100111210 has 64 divisors (see below), whose sum is σ = 54506609379072. Its totient is φ = 5736849255936.

The previous prime is 22112100111149. The next prime is 22112100111259. The reversal of 22112100111210 is 1211100121122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22112100111210.

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, 18173062 + ... + 19351598.

It is an arithmetic number, because the mean of its divisors is an integer number (851665771548).

Almost surely, 2^{22112100111210} is an apocalyptic number.

22112100111210 is an abundant number, since it is smaller than the sum of its proper divisors (32394509267862).

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

22112100111210 is a wasteful number, since it uses less digits than its factorization.

22112100111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195487.

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

Adding to 22112100111210 its reverse (1211100121122), we get a palindrome (23323200232332).

The spelling of 22112100111210 in words is "twenty-two trillion, one hundred twelve billion, one hundred million, one hundred eleven thousand, two hundred ten".