22221112011210 has 96 divisors (see below), whose sum is σ = 66645535612032. Its totient is φ = 5031642971520.

The previous prime is 22221112011181. The next prime is 22221112011221. The reversal of 22221112011210 is 1211021112222.

22221112011210 is a `hidden beast` number, since 22 + 221 + 11 + 201 + 1 + 210 = 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164753181 + ... + 164888000.

It is an arithmetic number, because the mean of its divisors is an integer number (694224329292).

Almost surely, 2^{22221112011210} is an apocalyptic number.

22221112011210 is an abundant number, since it is smaller than the sum of its proper divisors (44424423600822).

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

22221112011210 is a wasteful number, since it uses less digits than its factorization.

22221112011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329641308 (or 329641305 counting only the distinct ones).

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

Adding to 22221112011210 its reverse (1211021112222), we get a palindrome (23432133123432).

The spelling of 22221112011210 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, eleven thousand, two hundred ten".