12311120212 has 12 divisors (see below), whose sum is σ = 21653824500. Its totient is φ = 6124313216.

The previous prime is 12311120207. The next prime is 12311120219. The reversal of 12311120212 is 21202111321.

It can be written as a sum of positive squares in 2 ways, for example, as 7779945616 + 4531174596 = 88204^2 + 67314^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311120219) 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, 7810837 + ... + 7812412.

It is an arithmetic number, because the mean of its divisors is an integer number (1804485375).

Almost surely, 2^12311120212 is an apocalyptic number.

It is an amenable number.

12311120212 is a deficient number, since it is larger than the sum of its proper divisors (9342704288).

12311120212 is a wasteful number, since it uses less digits than its factorization.

12311120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15623450 (or 15623448 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12311120212 its reverse (21202111321), we get a palindrome (33513231533).

The spelling of 12311120212 in words is "twelve billion, three hundred eleven million, one hundred twenty thousand, two hundred twelve".