22212100122222 has 32 divisors (see below), whose sum is σ = 45178283174400. Its totient is φ = 7278359165888.

The previous prime is 22212100122197. The next prime is 22212100122239. The reversal of 22212100122222 is 22222100121222.

It is a super-2 number, since 2×22212100122222² (a number of 27 digits) contains 22 as substring.

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, 13763338 + ... + 15292274.

It is an arithmetic number, because the mean of its divisors is an integer number (1411821349200).

Almost surely, 2^{22212100122222} is an apocalyptic number.

22212100122222 is an abundant number, since it is smaller than the sum of its proper divisors (22966183052178).

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

22212100122222 is a wasteful number, since it uses less digits than its factorization.

22212100122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570040.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22212100122222 its reverse (22222100121222), we get a palindrome (44434200243444).

The spelling of 22212100122222 in words is "twenty-two trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-two".