22263637021 has 2 divisors, whose sum is σ = 22263637022. Its totient is φ = 22263637020.

The previous prime is 22263636959. The next prime is 22263637051. The reversal of 22263637021 is 12073636222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17492972121 + 4770664900 = 132261^2 + 69070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22263637021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22263637051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11131818510 + 11131818511.

It is an arithmetic number, because the mean of its divisors is an integer number (11131818511).

Almost surely, 2^22263637021 is an apocalyptic number.

It is an amenable number.

22263637021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22263637021 is an equidigital number, since it uses as much as digits as its factorization.

22263637021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 22263637021 in words is "twenty-two billion, two hundred sixty-three million, six hundred thirty-seven thousand, twenty-one".