22131502501 has 2 divisors, whose sum is σ = 22131502502. Its totient is φ = 22131502500.

The previous prime is 22131502493. The next prime is 22131502559. The reversal of 22131502501 is 10520513122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13120557025 + 9010945476 = 114545^2 + 94926^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131502501 - 2³ = 22131502493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131509501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065751250 + 11065751251.

It is an arithmetic number, because the mean of its divisors is an integer number (11065751251).

Almost surely, 2^22131502501 is an apocalyptic number.

It is an amenable number.

22131502501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131502501 is an equidigital number, since it uses as much as digits as its factorization.

22131502501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 22131502501 in words is "twenty-two billion, one hundred thirty-one million, five hundred two thousand, five hundred one".