23413955221 has 2 divisors, whose sum is σ = 23413955222. Its totient is φ = 23413955220.

The previous prime is 23413955171. The next prime is 23413955231. The reversal of 23413955221 is 12255931432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20595407121 + 2818548100 = 143511^2 + 53090^2 .

It is a cyclic number.

It is not a de Polignac number, because 23413955221 - 2⁷ = 23413955093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23413955231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11706977610 + 11706977611.

It is an arithmetic number, because the mean of its divisors is an integer number (11706977611).

Almost surely, 2^23413955221 is an apocalyptic number.

It is an amenable number.

23413955221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23413955221 is an equidigital number, since it uses as much as digits as its factorization.

23413955221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The spelling of 23413955221 in words is "twenty-three billion, four hundred thirteen million, nine hundred fifty-five thousand, two hundred twenty-one".