22327504721 has 2 divisors, whose sum is σ = 22327504722. Its totient is φ = 22327504720.

The previous prime is 22327504699. The next prime is 22327504741. The reversal of 22327504721 is 12740572322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20631300496 + 1696204225 = 143636^2 + 41185^2 .

It is a cyclic number.

It is not a de Polignac number, because 22327504721 - 2³⁰ = 21253762897 is a prime.

It is a super-3 number, since 3×22327504721³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22327504741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11163752360 + 11163752361.

It is an arithmetic number, because the mean of its divisors is an integer number (11163752361).

Almost surely, 2^22327504721 is an apocalyptic number.

It is an amenable number.

22327504721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22327504721 is an equidigital number, since it uses as much as digits as its factorization.

22327504721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 35.

The spelling of 22327504721 in words is "twenty-two billion, three hundred twenty-seven million, five hundred four thousand, seven hundred twenty-one".