12323210221 has 4 divisors (see below), whose sum is σ = 14083668832. Its totient is φ = 10562751612.

The previous prime is 12323210219. The next prime is 12323210231. The reversal of 12323210221 is 12201232321.

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 not a de Polignac number, because 12323210221 - 2¹ = 12323210219 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 (12323210201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880229295 + ... + 880229308.

It is an arithmetic number, because the mean of its divisors is an integer number (3520917208).

Almost surely, 2^12323210221 is an apocalyptic number.

It is an amenable number.

12323210221 is a deficient number, since it is larger than the sum of its proper divisors (1760458611).

12323210221 is an equidigital number, since it uses as much as digits as its factorization.

12323210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760458610.

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

Adding to 12323210221 its reverse (12201232321), we get a palindrome (24524442542).

The spelling of 12323210221 in words is "twelve billion, three hundred twenty-three million, two hundred ten thousand, two hundred twenty-one".