22077255217 has 2 divisors, whose sum is σ = 22077255218. Its totient is φ = 22077255216.

The previous prime is 22077255197. The next prime is 22077255223. The reversal of 22077255217 is 71255277022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18307172416 + 3770082801 = 135304^2 + 61401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22077255217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22077255217.

It is not a weakly prime, because it can be changed into another prime (22077255287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11038627608 + 11038627609.

It is an arithmetic number, because the mean of its divisors is an integer number (11038627609).

Almost surely, 2^22077255217 is an apocalyptic number.

It is an amenable number.

22077255217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22077255217 is an equidigital number, since it uses as much as digits as its factorization.

22077255217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137200, while the sum is 40.

The spelling of 22077255217 in words is "twenty-two billion, seventy-seven million, two hundred fifty-five thousand, two hundred seventeen".