22677392821 has 2 divisors, whose sum is σ = 22677392822. Its totient is φ = 22677392820.

The previous prime is 22677392807. The next prime is 22677392851. The reversal of 22677392821 is 12829377622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15136380900 + 7541011921 = 123030^2 + 86839^2 .

It is a cyclic number.

It is not a de Polignac number, because 22677392821 - 2⁵ = 22677392789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22677392851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11338696410 + 11338696411.

It is an arithmetic number, because the mean of its divisors is an integer number (11338696411).

Almost surely, 2^22677392821 is an apocalyptic number.

It is an amenable number.

22677392821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22677392821 is an equidigital number, since it uses as much as digits as its factorization.

22677392821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The spelling of 22677392821 in words is "twenty-two billion, six hundred seventy-seven million, three hundred ninety-two thousand, eight hundred twenty-one".