21122020331022 has 16 divisors (see below), whose sum is σ = 45493582251600. Its totient is φ = 6499083178752.

The previous prime is 21122020330951. The next prime is 21122020331047. The reversal of 21122020331022 is 22013302022112.

It is a super-2 number, since 2×21122020331022² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122020331022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135397566147 + ... + 135397566302.

It is an arithmetic number, because the mean of its divisors is an integer number (2843348890725).

Almost surely, 2^{21122020331022} is an apocalyptic number.

21122020331022 is an abundant number, since it is smaller than the sum of its proper divisors (24371561920578).

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

21122020331022 is a wasteful number, since it uses less digits than its factorization.

21122020331022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270795132467.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21122020331022 its reverse (22013302022112), we get a palindrome (43135322353134).

The spelling of 21122020331022 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, three hundred thirty-one thousand, twenty-two".