12230032100021 has 4 divisors (see below), whose sum is σ = 12230053660044. Its totient is φ = 12230010540000.

The previous prime is 12230032099993. The next prime is 12230032100023. The reversal of 12230032100021 is 12000123003221.

12230032100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7382170510225 + 4847861589796 = 2717015^2 + 2201786^2 .

It is a cyclic number.

It is not a de Polignac number, because 12230032100021 - 2²² = 12230027905717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230032100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9905480 + ... + 11071521.

It is an arithmetic number, because the mean of its divisors is an integer number (3057513415011).

Almost surely, 2^{12230032100021} is an apocalyptic number.

It is an amenable number.

12230032100021 is a deficient number, since it is larger than the sum of its proper divisors (21560023).

12230032100021 is an equidigital number, since it uses as much as digits as its factorization.

12230032100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560022.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12230032100021 its reverse (12000123003221), we get a palindrome (24230155103242).

The spelling of 12230032100021 in words is "twelve trillion, two hundred thirty billion, thirty-two million, one hundred thousand, twenty-one".