12021300232021 has 4 divisors (see below), whose sum is σ = 12101980099500. Its totient is φ = 11940620364544.

The previous prime is 12021300231991. The next prime is 12021300232087. The reversal of 12021300232021 is 12023200312021.

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 5367423232900 + 6653876999121 = 2316770^2 + 2579511^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021300232021 - 2⁷ = 12021300231893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021300232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021300232121) 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, 40339933516 + ... + 40339933813.

It is an arithmetic number, because the mean of its divisors is an integer number (3025495024875).

Almost surely, 2^{12021300232021} is an apocalyptic number.

It is an amenable number.

12021300232021 is a deficient number, since it is larger than the sum of its proper divisors (80679867479).

12021300232021 is an equidigital number, since it uses as much as digits as its factorization.

12021300232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80679867478.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12021300232021 its reverse (12023200312021), we get a palindrome (24044500544042).

The spelling of 12021300232021 in words is "twelve trillion, twenty-one billion, three hundred million, two hundred thirty-two thousand, twenty-one".