12321122303231 has 4 divisors (see below), whose sum is σ = 14081282632272. Its totient is φ = 10560961974192.

The previous prime is 12321122303221. The next prime is 12321122303299. The reversal of 12321122303231 is 13230322112321.

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

It is a de Polignac number, because none of the positive numbers 2^k-12321122303231 is a prime.

It is a super-2 number, since 2×12321122303231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12321122303231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321122303201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880080164510 + ... + 880080164523.

It is an arithmetic number, because the mean of its divisors is an integer number (3520320658068).

Almost surely, 2^{12321122303231} is an apocalyptic number.

12321122303231 is a deficient number, since it is larger than the sum of its proper divisors (1760160329041).

12321122303231 is an equidigital number, since it uses as much as digits as its factorization.

12321122303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760160329040.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12321122303231 its reverse (13230322112321), we get a palindrome (25551444415552).

The spelling of 12321122303231 in words is "twelve trillion, three hundred twenty-one billion, one hundred twenty-two million, three hundred three thousand, two hundred thirty-one".