112111111997 has 2 divisors, whose sum is σ = 112111111998. Its totient is φ = 112111111996.

The previous prime is 112111111969. The next prime is 112111112011. The reversal of 112111111997 is 799111111211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82365556036 + 29745555961 = 286994^2 + 172469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112111111997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112111131997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56055555998 + 56055555999.

It is an arithmetic number, because the mean of its divisors is an integer number (56055555999).

Almost surely, 2^112111111997 is an apocalyptic number.

It is an amenable number.

112111111997 is a deficient number, since it is larger than the sum of its proper divisors (1).

112111111997 is an equidigital number, since it uses as much as digits as its factorization.

112111111997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 35.

The spelling of 112111111997 in words is "one hundred twelve billion, one hundred eleven million, one hundred eleven thousand, nine hundred ninety-seven".