112100000002021 has 12 divisors (see below), whose sum is σ = 116597089303812. Its totient is φ = 107769956895104.

The previous prime is 112100000001991. The next prime is 112100000002037. The reversal of 112100000002021 is 120200000001211.

It can be written as a sum of positive squares in 6 ways, for example, as 5643807948900 + 106456192053121 = 2375670^2 + 10317761^2 .

It is not a de Polignac number, because 112100000002021 - 2³⁵ = 112065640263653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112100000001989 and 112100000002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112100000002061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285842026 + ... + 286233931.

It is an arithmetic number, because the mean of its divisors is an integer number (9716424108651).

Almost surely, 2^{112100000002021} is an apocalyptic number.

It is an amenable number.

112100000002021 is a deficient number, since it is larger than the sum of its proper divisors (4497089301791).

112100000002021 is an equidigital number, since it uses as much as digits as its factorization.

112100000002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572076248 (or 572076219 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 112100000002021 its reverse (120200000001211), we get a palindrome (232300000003232).

The spelling of 112100000002021 in words is "one hundred twelve trillion, one hundred billion, two thousand, twenty-one".