112643170721 has 2 divisors, whose sum is σ = 112643170722. Its totient is φ = 112643170720.

The previous prime is 112643170699. The next prime is 112643170733. The reversal of 112643170721 is 127071346211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98054154496 + 14589016225 = 313136^2 + 120785^2 .

It is a cyclic number.

It is not a de Polignac number, because 112643170721 - 2³⁴ = 95463301537 is a prime.

It is not a weakly prime, because it can be changed into another prime (112643179721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56321585360 + 56321585361.

It is an arithmetic number, because the mean of its divisors is an integer number (56321585361).

Almost surely, 2^112643170721 is an apocalyptic number.

It is an amenable number.

112643170721 is a deficient number, since it is larger than the sum of its proper divisors (1).

112643170721 is an equidigital number, since it uses as much as digits as its factorization.

112643170721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 112643170721 in words is "one hundred twelve billion, six hundred forty-three million, one hundred seventy thousand, seven hundred twenty-one".