22212111112210 has 32 divisors (see below), whose sum is σ = 42106042598400. Its totient is φ = 8413233586560.

The previous prime is 22212111112199. The next prime is 22212111112271. The reversal of 22212111112210 is 1221111121222.

It is a happy number.

It is a super-2 number, since 2×22212111112210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 27288595 + ... + 28090774.

It is an arithmetic number, because the mean of its divisors is an integer number (1315813831200).

Almost surely, 2^{22212111112210} is an apocalyptic number.

22212111112210 is a deficient number, since it is larger than the sum of its proper divisors (19893931486190).

22212111112210 is a wasteful number, since it uses less digits than its factorization.

22212111112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55381506.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22212111112210 its reverse (1221111121222), we get a palindrome (23433222233432).

The spelling of 22212111112210 in words is "twenty-two trillion, two hundred twelve billion, one hundred eleven million, one hundred twelve thousand, two hundred ten".