12320321223 has 48 divisors (see below), whose sum is σ = 19652906880. Its totient is φ = 6842332224.

The previous prime is 12320321191. The next prime is 12320321231. The reversal of 12320321223 is 32212302321.

It is a happy number.

It is not a de Polignac number, because 12320321223 - 2⁵ = 12320321191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12320321223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320321023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 826248 + ... + 841026.

It is an arithmetic number, because the mean of its divisors is an integer number (409435560).

Almost surely, 2^12320321223 is an apocalyptic number.

12320321223 is a deficient number, since it is larger than the sum of its proper divisors (7332585657).

12320321223 is a wasteful number, since it uses less digits than its factorization.

12320321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14956 (or 14949 counting only the distinct ones).

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

Adding to 12320321223 its reverse (32212302321), we get a palindrome (44532623544).

The spelling of 12320321223 in words is "twelve billion, three hundred twenty million, three hundred twenty-one thousand, two hundred twenty-three".