112724621021 has 2 divisors, whose sum is σ = 112724621022. Its totient is φ = 112724621020.

The previous prime is 112724621011. The next prime is 112724621033. The reversal of 112724621021 is 120126427211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90823876900 + 21900744121 = 301370^2 + 147989^2 .

It is a cyclic number.

It is not a de Polignac number, because 112724621021 - 2²² = 112720426717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112724621011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56362310510 + 56362310511.

It is an arithmetic number, because the mean of its divisors is an integer number (56362310511).

Almost surely, 2^112724621021 is an apocalyptic number.

It is an amenable number.

112724621021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112724621021 is an equidigital number, since it uses as much as digits as its factorization.

112724621021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The spelling of 112724621021 in words is "one hundred twelve billion, seven hundred twenty-four million, six hundred twenty-one thousand, twenty-one".