22121220212022 has 16 divisors (see below), whose sum is σ = 46844936919792. Its totient is φ = 6939990654720.

The previous prime is 22121220211973. The next prime is 22121220212027. The reversal of 22121220212022 is 22021202212122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121220212022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121220212027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108437353879 + ... + 108437354082.

It is an arithmetic number, because the mean of its divisors is an integer number (2927808557487).

Almost surely, 2^{22121220212022} is an apocalyptic number.

22121220212022 is an abundant number, since it is smaller than the sum of its proper divisors (24723716707770).

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

22121220212022 is a wasteful number, since it uses less digits than its factorization.

22121220212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216874707983.

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

Adding to 22121220212022 its reverse (22021202212122), we get a palindrome (44142422424144).

The spelling of 22121220212022 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, twenty-two".