12311222312 has 16 divisors (see below), whose sum is σ = 23182616340. Its totient is φ = 6129191296.

The previous prime is 12311222309. The next prime is 12311222321. The reversal of 12311222312 is 21322211321.

12311222312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11851805956 + 459416356 = 108866^2 + 21434^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300503 + ... + 3304230.

Almost surely, 2^12311222312 is an apocalyptic number.

It is an amenable number.

12311222312 is a deficient number, since it is larger than the sum of its proper divisors (10871394028).

12311222312 is a wasteful number, since it uses less digits than its factorization.

12311222312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604972 (or 6604968 counting only the distinct ones).

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

Adding to 12311222312 its reverse (21322211321), we get a palindrome (33633433633).

The spelling of 12311222312 in words is "twelve billion, three hundred eleven million, two hundred twenty-two thousand, three hundred twelve".