2222117657 has 2 divisors, whose sum is σ = 2222117658. Its totient is φ = 2222117656.

The previous prime is 2222117641. The next prime is 2222117707. The reversal of 2222117657 is 7567112222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2218033216 + 4084441 = 47096^2 + 2021^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222117657 - 2⁴ = 2222117641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222117627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111058828 + 1111058829.

It is an arithmetic number, because the mean of its divisors is an integer number (1111058829).

Almost surely, 2^2222117657 is an apocalyptic number.

It is an amenable number.

2222117657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222117657 is an equidigital number, since it uses as much as digits as its factorization.

2222117657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 2222117657 is about 47139.3429843904. The cubic root of 2222117657 is about 1304.9354121183.

Adding to 2222117657 its reverse (7567112222), we get a palindrome (9789229879).

The spelling of 2222117657 in words is "two billion, two hundred twenty-two million, one hundred seventeen thousand, six hundred fifty-seven".