22549460144921 has 2 divisors, whose sum is σ = 22549460144922. Its totient is φ = 22549460144920.

The previous prime is 22549460144909. The next prime is 22549460144963. The reversal of 22549460144921 is 12944106494522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15839604010000 + 6709856134921 = 3979900^2 + 2590339^2 .

It is a cyclic number.

It is not a de Polignac number, because 22549460144921 - 2⁶ = 22549460144857 is a prime.

It is not a weakly prime, because it can be changed into another prime (22549460146921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11274730072460 + 11274730072461.

It is an arithmetic number, because the mean of its divisors is an integer number (11274730072461).

Almost surely, 2^{22549460144921} is an apocalyptic number.

It is an amenable number.

22549460144921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22549460144921 is an equidigital number, since it uses as much as digits as its factorization.

22549460144921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 22549460144921 in words is "twenty-two trillion, five hundred forty-nine billion, four hundred sixty million, one hundred forty-four thousand, nine hundred twenty-one".