112100012020021 has 2 divisors, whose sum is σ = 112100012020022. Its totient is φ = 112100012020020.

The previous prime is 112100012019997. The next prime is 112100012020033. The reversal of 112100012020021 is 120020210001211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97339731888100 + 14760280131921 = 9866090^2 + 3841911^2 .

It is a cyclic number.

It is not a de Polignac number, because 112100012020021 - 2⁹ = 112100012019509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112100012019983 and 112100012020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112100012027021) 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, 56050006010010 + 56050006010011.

It is an arithmetic number, because the mean of its divisors is an integer number (56050006010011).

Almost surely, 2^{112100012020021} is an apocalyptic number.

It is an amenable number.

112100012020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112100012020021 is an equidigital number, since it uses as much as digits as its factorization.

112100012020021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 112100012020021 its reverse (120020210001211), we get a palindrome (232120222021232).

The spelling of 112100012020021 in words is "one hundred twelve trillion, one hundred billion, twelve million, twenty thousand, twenty-one".