22631871901 has 2 divisors, whose sum is σ = 22631871902. Its totient is φ = 22631871900.

The previous prime is 22631871893. The next prime is 22631871931. The reversal of 22631871901 is 10917813622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17888795001 + 4743076900 = 133749^2 + 68870^2 .

It is a cyclic number.

It is not a de Polignac number, because 22631871901 - 2³ = 22631871893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22631871931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11315935950 + 11315935951.

It is an arithmetic number, because the mean of its divisors is an integer number (11315935951).

Almost surely, 2^22631871901 is an apocalyptic number.

It is an amenable number.

22631871901 is a deficient number, since it is larger than the sum of its proper divisors (1).

22631871901 is an equidigital number, since it uses as much as digits as its factorization.

22631871901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 22631871901 in words is "twenty-two billion, six hundred thirty-one million, eight hundred seventy-one thousand, nine hundred one".