22163120557 has 2 divisors, whose sum is σ = 22163120558. Its totient is φ = 22163120556.

The previous prime is 22163120533. The next prime is 22163120641. The reversal of 22163120557 is 75502136122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19933486596 + 2229633961 = 141186^2 + 47219^2 .

It is a cyclic number.

It is not a de Polignac number, because 22163120557 - 2¹⁵ = 22163087789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22163120527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11081560278 + 11081560279.

It is an arithmetic number, because the mean of its divisors is an integer number (11081560279).

Almost surely, 2^22163120557 is an apocalyptic number.

It is an amenable number.

22163120557 is a deficient number, since it is larger than the sum of its proper divisors (1).

22163120557 is an equidigital number, since it uses as much as digits as its factorization.

22163120557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 22163120557 its reverse (75502136122), we get a palindrome (97665256679).

The spelling of 22163120557 in words is "twenty-two billion, one hundred sixty-three million, one hundred twenty thousand, five hundred fifty-seven".