12123313112 has 16 divisors (see below), whose sum is σ = 22748866200. Its totient is φ = 6056948800.

The previous prime is 12123313099. The next prime is 12123313129. The reversal of 12123313112 is 21131332121.

It is a happy number.

12123313112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12123313112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 577514 + ... + 598137.

Almost surely, 2^12123313112 is an apocalyptic number.

It is an amenable number.

12123313112 is a deficient number, since it is larger than the sum of its proper divisors (10625553088).

12123313112 is a wasteful number, since it uses less digits than its factorization.

12123313112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176946 (or 1176942 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 12123313112 its reverse (21131332121), we get a palindrome (33254645233).

The spelling of 12123313112 in words is "twelve billion, one hundred twenty-three million, three hundred thirteen thousand, one hundred twelve".