2217112957 has 2 divisors, whose sum is σ = 2217112958. Its totient is φ = 2217112956.

The previous prime is 2217112951. The next prime is 2217113009. The reversal of 2217112957 is 7592117122.

It is a happy number.

2217112957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2080363321 + 136749636 = 45611^2 + 11694^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217112957 - 2³ = 2217112949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2217112951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108556478 + 1108556479.

It is an arithmetic number, because the mean of its divisors is an integer number (1108556479).

Almost surely, 2^2217112957 is an apocalyptic number.

It is an amenable number.

2217112957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217112957 is an equidigital number, since it uses as much as digits as its factorization.

2217112957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 37.

The square root of 2217112957 is about 47086.2289528478. The cubic root of 2217112957 is about 1303.9550080845.

The spelling of 2217112957 in words is "two billion, two hundred seventeen million, one hundred twelve thousand, nine hundred fifty-seven".