12322312121 has 4 divisors (see below), whose sum is σ = 14082642432. Its totient is φ = 10561981812.

The previous prime is 12322312087. The next prime is 12322312139. The reversal of 12322312121 is 12121322321.

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 12322312121 - 2¹⁴ = 12322295737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12322312093 and 12322312102.

It is not an unprimeable number, because it can be changed into a prime (12322312021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880165145 + ... + 880165158.

It is an arithmetic number, because the mean of its divisors is an integer number (3520660608).

Almost surely, 2^12322312121 is an apocalyptic number.

It is an amenable number.

12322312121 is a deficient number, since it is larger than the sum of its proper divisors (1760330311).

12322312121 is an equidigital number, since it uses as much as digits as its factorization.

12322312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760330310.

The product of its digits is 288, while the sum is 20.

Adding to 12322312121 its reverse (12121322321), we get a palindrome (24443634442).

The spelling of 12322312121 in words is "twelve billion, three hundred twenty-two million, three hundred twelve thousand, one hundred twenty-one".