222212768857 has 2 divisors, whose sum is σ = 222212768858. Its totient is φ = 222212768856.

The previous prime is 222212768849. The next prime is 222212768879. The reversal of 222212768857 is 758867212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116346481216 + 105866287641 = 341096^2 + 325371^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212768857 - 2³ = 222212768849 is a prime.

It is not a weakly prime, because it can be changed into another prime (222212768887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106384428 + 111106384429.

It is an arithmetic number, because the mean of its divisors is an integer number (111106384429).

Almost surely, 2^222212768857 is an apocalyptic number.

It is an amenable number.

222212768857 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212768857 is an equidigital number, since it uses as much as digits as its factorization.

222212768857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3010560, while the sum is 52.

The spelling of 222212768857 in words is "two hundred twenty-two billion, two hundred twelve million, seven hundred sixty-eight thousand, eight hundred fifty-seven".