12323032221 has 4 divisors (see below), whose sum is σ = 16430709632. Its totient is φ = 8215354812.

The previous prime is 12323032219. The next prime is 12323032229. The reversal of 12323032221 is 12223032321.

It is a happy number.

12323032221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12323032221 - 2¹ = 12323032219 is a prime.

It is a super-3 number, since 3×12323032221³ (a number of 31 digits) contains 333 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 (12323032229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053838701 + ... + 2053838706.

It is an arithmetic number, because the mean of its divisors is an integer number (4107677408).

Almost surely, 2^12323032221 is an apocalyptic number.

It is an amenable number.

12323032221 is a deficient number, since it is larger than the sum of its proper divisors (4107677411).

12323032221 is an equidigital number, since it uses as much as digits as its factorization.

12323032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107677410.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12323032221 its reverse (12223032321), we get a palindrome (24546064542).

The spelling of 12323032221 in words is "twelve billion, three hundred twenty-three million, thirty-two thousand, two hundred twenty-one".