22695627221 has 2 divisors, whose sum is σ = 22695627222. Its totient is φ = 22695627220.

The previous prime is 22695627197. The next prime is 22695627257. The reversal of 22695627221 is 12272659622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12207819121 + 10487808100 = 110489^2 + 102410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22695627221 - 2²⁶ = 22628518357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22695627271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11347813610 + 11347813611.

It is an arithmetic number, because the mean of its divisors is an integer number (11347813611).

Almost surely, 2^22695627221 is an apocalyptic number.

It is an amenable number.

22695627221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22695627221 is an equidigital number, since it uses as much as digits as its factorization.

22695627221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The spelling of 22695627221 in words is "twenty-two billion, six hundred ninety-five million, six hundred twenty-seven thousand, two hundred twenty-one".