22057196787081 has 27 divisors (see below), whose sum is σ = 32657286695527. Its totient is φ = 14345768531040.

The previous prime is 22057196787071. The next prime is 22057196787091. The reversal of 22057196787081 is 18078769175022.

The square root of 22057196787081 is 4696509.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (22057196787071) and next prime (22057196787091).

It can be written as a sum of positive squares in only one way, i.e., 1062839345481 + 20994357441600 = 1030941^2 + 4581960^2 .

It is not a de Polignac number, because 22057196787081 - 2⁷ = 22057196786953 is a prime.

It is a super-2 number, since 2×22057196787081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22057196787061) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 577651516 + ... + 577689698.

Almost surely, 2^{22057196787081} is an apocalyptic number.

22057196787081 is the 4696509-th square number.

22057196787081 is the 2348255-th centered octagonal number.

It is an amenable number.

22057196787081 is a deficient number, since it is larger than the sum of its proper divisors (10600089908446).

22057196787081 is an frugal number, since it uses more digits than its factorization.

22057196787081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76454 (or 38227 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 63.

The spelling of 22057196787081 in words is "twenty-two trillion, fifty-seven billion, one hundred ninety-six million, seven hundred eighty-seven thousand, eighty-one".