22221112210 has 32 divisors (see below), whose sum is σ = 43649020800. Its totient is φ = 8077656960.

The previous prime is 22221112157. The next prime is 22221112231. The reversal of 22221112210 is 1221112222.

It is a happy number.

It is a super-2 number, since 2×22221112210² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305886 + ... + 371494.

It is an arithmetic number, because the mean of its divisors is an integer number (1364031900).

Almost surely, 2^22221112210 is an apocalyptic number.

22221112210 is a deficient number, since it is larger than the sum of its proper divisors (21427908590).

22221112210 is a wasteful number, since it uses less digits than its factorization.

22221112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68706.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221112210 its reverse (1221112222), we get a palindrome (23442224432).

It can be divided in two parts, 22221 and 112210, that added together give a palindrome (134431).

The spelling of 22221112210 in words is "twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred ten".