22021122222120 has 64 divisors (see below), whose sum is σ = 75500990478720. Its totient is φ = 5033399364864.

The previous prime is 22021122222119. The next prime is 22021122222149. The reversal of 22021122222120 is 2122222112022.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 13107810007 + ... + 13107811686.

It is an arithmetic number, because the mean of its divisors is an integer number (1179702976230).

Almost surely, 2^{22021122222120} is an apocalyptic number.

22021122222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021122222120 is an abundant number, since it is smaller than the sum of its proper divisors (53479868256600).

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

22021122222120 is a wasteful number, since it uses less digits than its factorization.

22021122222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26215621714 (or 26215621710 counting only the distinct ones).

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

Adding to 22021122222120 its reverse (2122222112022), we get a palindrome (24143344334142).

The spelling of 22021122222120 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty".