22131320312369 has 2 divisors, whose sum is σ = 22131320312370. Its totient is φ = 22131320312368.

The previous prime is 22131320312359. The next prime is 22131320312441. The reversal of 22131320312369 is 96321302313122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17851850271025 + 4279470041344 = 4225145^2 + 2068688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22131320312369 is a prime.

It is a super-2 number, since 2×22131320312369² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22131320312359) 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, 11065660156184 + 11065660156185.

It is an arithmetic number, because the mean of its divisors is an integer number (11065660156185).

Almost surely, 2^{22131320312369} is an apocalyptic number.

It is an amenable number.

22131320312369 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131320312369 is an equidigital number, since it uses as much as digits as its factorization.

22131320312369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 22131320312369 in words is "twenty-two trillion, one hundred thirty-one billion, three hundred twenty million, three hundred twelve thousand, three hundred sixty-nine".