1192112111857 has 2 divisors, whose sum is σ = 1192112111858. Its totient is φ = 1192112111856.

The previous prime is 1192112111837. The next prime is 1192112111923. The reversal of 1192112111857 is 7581112112911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728754176241 + 463357935616 = 853671^2 + 680704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1192112111857 - 2³⁵ = 1157752373489 is a prime.

It is a super-2 number, since 2×1192112111857² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1192112111837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596056055928 + 596056055929.

It is an arithmetic number, because the mean of its divisors is an integer number (596056055929).

Almost surely, 2^{1192112111857} is an apocalyptic number.

It is an amenable number.

1192112111857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1192112111857 is an equidigital number, since it uses as much as digits as its factorization.

1192112111857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 40.

The spelling of 1192112111857 in words is "one trillion, one hundred ninety-two billion, one hundred twelve million, one hundred eleven thousand, eight hundred fifty-seven".