22137254897 has 2 divisors, whose sum is σ = 22137254898. Its totient is φ = 22137254896.

The previous prime is 22137254879. The next prime is 22137254917. The reversal of 22137254897 is 79845273122.

Together with previous prime (22137254879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17400511921 + 4736742976 = 131911^2 + 68824^2 .

It is a cyclic number.

It is not a de Polignac number, because 22137254897 - 2⁶ = 22137254833 is a prime.

It is not a weakly prime, because it can be changed into another prime (22137254807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11068627448 + 11068627449.

It is an arithmetic number, because the mean of its divisors is an integer number (11068627449).

Almost surely, 2^22137254897 is an apocalyptic number.

It is an amenable number.

22137254897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22137254897 is an equidigital number, since it uses as much as digits as its factorization.

22137254897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 22137254897 in words is "twenty-two billion, one hundred thirty-seven million, two hundred fifty-four thousand, eight hundred ninety-seven".