12321002131021 has 16 divisors (see below), whose sum is σ = 13308248419200. Its totient is φ = 11371887153088.

The previous prime is 12321002130971. The next prime is 12321002131037. The reversal of 12321002131021 is 12013120012321.

It is a cyclic number.

It is not a de Polignac number, because 12321002131021 - 2²⁹ = 12320465260109 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 12321002131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321002131421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4624966 + ... + 6784711.

It is an arithmetic number, because the mean of its divisors is an integer number (831765526200).

Almost surely, 2^{12321002131021} is an apocalyptic number.

It is an amenable number.

12321002131021 is a deficient number, since it is larger than the sum of its proper divisors (987246288179).

12321002131021 is a wasteful number, since it uses less digits than its factorization.

12321002131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411348.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12321002131021 its reverse (12013120012321), we get a palindrome (24334122143342).

It can be divided in two parts, 1232100 and 2131021, that added together give a triangular number (3363121 = T₂₅₉₃).

The spelling of 12321002131021 in words is "twelve trillion, three hundred twenty-one billion, two million, one hundred thirty-one thousand, twenty-one".