12010112100021 has 64 divisors (see below), whose sum is σ = 19538844364800. Its totient is φ = 6409099468800.

The previous prime is 12010112099981. The next prime is 12010112100029. The reversal of 12010112100021 is 12000121101021.

It is not a de Polignac number, because 12010112100021 - 2⁷ = 12010112099893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010112100029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193427701 + ... + 193489781.

It is an arithmetic number, because the mean of its divisors is an integer number (305294443200).

Almost surely, 2^{12010112100021} is an apocalyptic number.

It is an amenable number.

12010112100021 is a deficient number, since it is larger than the sum of its proper divisors (7528732264779).

12010112100021 is a wasteful number, since it uses less digits than its factorization.

12010112100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69010.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12010112100021 its reverse (12000121101021), we get a palindrome (24010233201042).

The spelling of 12010112100021 in words is "twelve trillion, ten billion, one hundred twelve million, one hundred thousand, twenty-one".