22464241540021 has 2 divisors, whose sum is σ = 22464241540022. Its totient is φ = 22464241540020.

The previous prime is 22464241539977. The next prime is 22464241540057. The reversal of 22464241540021 is 12004514246422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15679461672900 + 6784779867121 = 3959730^2 + 2604761^2 .

It is a cyclic number.

It is not a de Polignac number, because 22464241540021 - 2¹¹ = 22464241537973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22464241540061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11232120770010 + 11232120770011.

It is an arithmetic number, because the mean of its divisors is an integer number (11232120770011).

Almost surely, 2^{22464241540021} is an apocalyptic number.

It is an amenable number.

22464241540021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22464241540021 is an equidigital number, since it uses as much as digits as its factorization.

22464241540021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 22464241540021 its reverse (12004514246422), we get a palindrome (34468755786443).

The spelling of 22464241540021 in words is "twenty-two trillion, four hundred sixty-four billion, two hundred forty-one million, five hundred forty thousand, twenty-one".