12113122312 has 8 divisors (see below), whose sum is σ = 22712104350. Its totient is φ = 6056561152.

The previous prime is 12113122309. The next prime is 12113122457. The reversal of 12113122312 is 21322131121.

12113122312 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 only one way, i.e., 9989202916 + 2123919396 = 99946^2 + 46086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12113122312.

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 as a sum of consecutive naturals, namely, 757070137 + ... + 757070152.

Almost surely, 2^12113122312 is an apocalyptic number.

It is an amenable number.

12113122312 is a deficient number, since it is larger than the sum of its proper divisors (10598982038).

12113122312 is a wasteful number, since it uses less digits than its factorization.

12113122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514140295 (or 1514140291 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 12113122312 its reverse (21322131121), we get a palindrome (33435253433).

The spelling of 12113122312 in words is "twelve billion, one hundred thirteen million, one hundred twenty-two thousand, three hundred twelve".