113012121997 has 2 divisors, whose sum is σ = 113012121998. Its totient is φ = 113012121996.

The previous prime is 113012121949. The next prime is 113012122021. The reversal of 113012121997 is 799121210311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76128535396 + 36883586601 = 275914^2 + 192051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113012121997 is a prime.

It is a super-2 number, since 2×113012121997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113012127997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56506060998 + 56506060999.

It is an arithmetic number, because the mean of its divisors is an integer number (56506060999).

Almost surely, 2^113012121997 is an apocalyptic number.

It is an amenable number.

113012121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

113012121997 is an equidigital number, since it uses as much as digits as its factorization.

113012121997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 37.

The spelling of 113012121997 in words is "one hundred thirteen billion, twelve million, one hundred twenty-one thousand, nine hundred ninety-seven".