1222013015857 has 2 divisors, whose sum is σ = 1222013015858. Its totient is φ = 1222013015856.

The previous prime is 1222013015759. The next prime is 1222013015897. The reversal of 1222013015857 is 7585103102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1045948016656 + 176064999201 = 1022716^2 + 419601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222013015857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222013015897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611006507928 + 611006507929.

It is an arithmetic number, because the mean of its divisors is an integer number (611006507929).

Almost surely, 2^{1222013015857} is an apocalyptic number.

It is an amenable number.

1222013015857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222013015857 is an equidigital number, since it uses as much as digits as its factorization.

1222013015857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 1222013015857 in words is "one trillion, two hundred twenty-two billion, thirteen million, fifteen thousand, eight hundred fifty-seven".