12321301021 has 16 divisors (see below), whose sum is σ = 13686071040. Its totient is φ = 11038908160.

The previous prime is 12321300983. The next prime is 12321301061. The reversal of 12321301021 is 12010312321.

It is a cyclic number.

It is not a de Polignac number, because 12321301021 - 2¹⁹ = 12320776733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321300986 and 12321301004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321301061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141001 + ... + 211006.

It is an arithmetic number, because the mean of its divisors is an integer number (855379440).

Almost surely, 2^12321301021 is an apocalyptic number.

It is an amenable number.

12321301021 is a deficient number, since it is larger than the sum of its proper divisors (1364770019).

12321301021 is a wasteful number, since it uses less digits than its factorization.

12321301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352124.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12321301021 its reverse (12010312321), we get a palindrome (24331613342).

The spelling of 12321301021 in words is "twelve billion, three hundred twenty-one million, three hundred one thousand, twenty-one".