112031020021 has 2 divisors, whose sum is σ = 112031020022. Its totient is φ = 112031020020.

The previous prime is 112031019967. The next prime is 112031020033. The reversal of 112031020021 is 120020130211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101897577796 + 10133442225 = 319214^2 + 100665^2 .

It is a cyclic number.

It is not a de Polignac number, because 112031020021 - 2²¹ = 112028922869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112031019983 and 112031020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112031020081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56015510010 + 56015510011.

It is an arithmetic number, because the mean of its divisors is an integer number (56015510011).

Almost surely, 2^112031020021 is an apocalyptic number.

It is an amenable number.

112031020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112031020021 is an equidigital number, since it uses as much as digits as its factorization.

112031020021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 112031020021 its reverse (120020130211), we get a palindrome (232051150232).

The spelling of 112031020021 in words is "one hundred twelve billion, thirty-one million, twenty thousand, twenty-one".