22228981597 has 2 divisors, whose sum is σ = 22228981598. Its totient is φ = 22228981596.

The previous prime is 22228981561. The next prime is 22228981651. The reversal of 22228981597 is 79518982222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12847315716 + 9381665881 = 113346^2 + 96859^2 .

It is a cyclic number.

It is not a de Polignac number, because 22228981597 - 2²⁷ = 22094763869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22228981517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11114490798 + 11114490799.

It is an arithmetic number, because the mean of its divisors is an integer number (11114490799).

Almost surely, 2^22228981597 is an apocalyptic number.

It is an amenable number.

22228981597 is a deficient number, since it is larger than the sum of its proper divisors (1).

22228981597 is an equidigital number, since it uses as much as digits as its factorization.

22228981597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 55.

The spelling of 22228981597 in words is "twenty-two billion, two hundred twenty-eight million, nine hundred eighty-one thousand, five hundred ninety-seven".