12323201021 has 4 divisors (see below), whose sum is σ = 12438371232. Its totient is φ = 12208030812.

The previous prime is 12323200961. The next prime is 12323201057. The reversal of 12323201021 is 12010232321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12323201021 - 2¹⁴ = 12323184637 is a prime.

It is a super-2 number, since 2×12323201021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323201071) 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, 57584945 + ... + 57585158.

It is an arithmetic number, because the mean of its divisors is an integer number (3109592808).

Almost surely, 2^12323201021 is an apocalyptic number.

It is an amenable number.

12323201021 is a deficient number, since it is larger than the sum of its proper divisors (115170211).

12323201021 is a wasteful number, since it uses less digits than its factorization.

12323201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115170210.

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

Adding to 12323201021 its reverse (12010232321), we get a palindrome (24333433342).

The spelling of 12323201021 in words is "twelve billion, three hundred twenty-three million, two hundred one thousand, twenty-one".