22131019839889 has 2 divisors, whose sum is σ = 22131019839890. Its totient is φ = 22131019839888.

The previous prime is 22131019839883. The next prime is 22131019839899. The reversal of 22131019839889 is 98893891013122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14898056040000 + 7232963799889 = 3859800^2 + 2689417^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131019839889 - 2²³ = 22131011451281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22131019839889.

It is not a weakly prime, because it can be changed into another prime (22131019839883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065509919944 + 11065509919945.

It is an arithmetic number, because the mean of its divisors is an integer number (11065509919945).

Almost surely, 2^{22131019839889} is an apocalyptic number.

It is an amenable number.

22131019839889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131019839889 is an equidigital number, since it uses as much as digits as its factorization.

22131019839889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 22131019839889 in words is "twenty-two trillion, one hundred thirty-one billion, nineteen million, eight hundred thirty-nine thousand, eight hundred eighty-nine".