12311142212 has 72 divisors (see below), whose sum is σ = 23476569984. Its totient is φ = 5645214208.

The previous prime is 12311142209. The next prime is 12311142247. The reversal of 12311142212 is 21224111321.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18852878 + ... + 18853530.

It is an arithmetic number, because the mean of its divisors is an integer number (326063472).

Almost surely, 2^12311142212 is an apocalyptic number.

It is an amenable number.

12311142212 is a deficient number, since it is larger than the sum of its proper divisors (11165427772).

12311142212 is a wasteful number, since it uses less digits than its factorization.

12311142212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1066 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 12311142212 its reverse (21224111321), we get a palindrome (33535253533).

The spelling of 12311142212 in words is "twelve billion, three hundred eleven million, one hundred forty-two thousand, two hundred twelve".