22946712721 has 2 divisors, whose sum is σ = 22946712722. Its totient is φ = 22946712720.

The previous prime is 22946712707. The next prime is 22946712743. The reversal of 22946712721 is 12721764922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14415604225 + 8531108496 = 120065^2 + 92364^2 .

It is a cyclic number.

It is not a de Polignac number, because 22946712721 - 2¹⁵ = 22946679953 is a prime.

It is not a weakly prime, because it can be changed into another prime (22946712751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11473356360 + 11473356361.

It is an arithmetic number, because the mean of its divisors is an integer number (11473356361).

Almost surely, 2^22946712721 is an apocalyptic number.

It is an amenable number.

22946712721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22946712721 is an equidigital number, since it uses as much as digits as its factorization.

22946712721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The spelling of 22946712721 in words is "twenty-two billion, nine hundred forty-six million, seven hundred twelve thousand, seven hundred twenty-one".