12311233321 has 4 divisors (see below), whose sum is σ = 12311455492. Its totient is φ = 12311011152.

The previous prime is 12311233243. The next prime is 12311233351. The reversal of 12311233321 is 12333211321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5610010000 + 6701223321 = 74900^2 + 81861^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311233321 - 2¹⁷ = 12311102249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311233292 and 12311233301.

It is not an unprimeable number, because it can be changed into a prime (12311233351) 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, 47515 + ... + 163951.

It is an arithmetic number, because the mean of its divisors is an integer number (3077863873).

Almost surely, 2^12311233321 is an apocalyptic number.

It is an amenable number.

12311233321 is a deficient number, since it is larger than the sum of its proper divisors (222171).

12311233321 is a wasteful number, since it uses less digits than its factorization.

12311233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222170.

The product of its digits is 648, while the sum is 22.

Adding to 12311233321 its reverse (12333211321), we get a palindrome (24644444642).

The spelling of 12311233321 in words is "twelve billion, three hundred eleven million, two hundred thirty-three thousand, three hundred twenty-one".