12321323213 has 4 divisors (see below), whose sum is σ = 12322759740. Its totient is φ = 12319886688.

The previous prime is 12321323159. The next prime is 12321323297. The reversal of 12321323213 is 31232312321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5924842729 + 6396480484 = 76973^2 + 79978^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321323213 - 2²⁸ = 12052887757 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 (12321323513) 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, 705320 + ... + 722577.

It is an arithmetic number, because the mean of its divisors is an integer number (3080689935).

Almost surely, 2^12321323213 is an apocalyptic number.

It is an amenable number.

12321323213 is a deficient number, since it is larger than the sum of its proper divisors (1436527).

12321323213 is an equidigital number, since it uses as much as digits as its factorization.

12321323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436526.

The product of its digits is 1296, while the sum is 23.

Adding to 12321323213 its reverse (31232312321), we get a palindrome (43553635534).

The spelling of 12321323213 in words is "twelve billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred thirteen".