22520024921 has 2 divisors, whose sum is σ = 22520024922. Its totient is φ = 22520024920.

The previous prime is 22520024909. The next prime is 22520024963. The reversal of 22520024921 is 12942002522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13494074896 + 9025950025 = 116164^2 + 95005^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520024921 - 2¹⁸ = 22519762777 is a prime.

It is a super-2 number, since 2×22520024921² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22520024621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260012460 + 11260012461.

It is an arithmetic number, because the mean of its divisors is an integer number (11260012461).

Almost surely, 2^22520024921 is an apocalyptic number.

It is an amenable number.

22520024921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520024921 is an equidigital number, since it uses as much as digits as its factorization.

22520024921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 22520024921 in words is "twenty-two billion, five hundred twenty million, twenty-four thousand, nine hundred twenty-one".