112101721957 has 2 divisors, whose sum is σ = 112101721958. Its totient is φ = 112101721956.

The previous prime is 112101721931. The next prime is 112101721969. The reversal of 112101721957 is 759127101211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110533641156 + 1568080801 = 332466^2 + 39599^2 .

It is a cyclic number.

It is not a de Polignac number, because 112101721957 - 2³¹ = 109954238309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112101721157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56050860978 + 56050860979.

It is an arithmetic number, because the mean of its divisors is an integer number (56050860979).

Almost surely, 2^112101721957 is an apocalyptic number.

It is an amenable number.

112101721957 is a deficient number, since it is larger than the sum of its proper divisors (1).

112101721957 is an equidigital number, since it uses as much as digits as its factorization.

112101721957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 37.

The spelling of 112101721957 in words is "one hundred twelve billion, one hundred one million, seven hundred twenty-one thousand, nine hundred fifty-seven".