22042412331021 has 6 divisors (see below), whose sum is σ = 31839040033710. Its totient is φ = 14694941554008.

The previous prime is 22042412331019. The next prime is 22042412331031. The reversal of 22042412331021 is 12013321424022.

22042412331021 is a `hidden beast` number, since 2 + 2 + 0 + 424 + 1 + 233 + 1 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13670729786025 + 8371682544996 = 3697395^2 + 2893386^2 .

It is not a de Polignac number, because 22042412331021 - 2¹ = 22042412331019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042412331031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224578462826 + ... + 1224578462843.

It is an arithmetic number, because the mean of its divisors is an integer number (5306506672285).

Almost surely, 2^{22042412331021} is an apocalyptic number.

It is an amenable number.

22042412331021 is a deficient number, since it is larger than the sum of its proper divisors (9796627702689).

22042412331021 is a wasteful number, since it uses less digits than its factorization.

22042412331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449156925675 (or 2449156925672 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 22042412331021 its reverse (12013321424022), we get a palindrome (34055733755043).

The spelling of 22042412331021 in words is "twenty-two trillion, forty-two billion, four hundred twelve million, three hundred thirty-one thousand, twenty-one".