12123432120 has 32 divisors (see below), whose sum is σ = 36370296720. Its totient is φ = 3232915200.

The previous prime is 12123432119. The next prime is 12123432133. The reversal of 12123432120 is 2123432121.

12123432120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 50514181 + ... + 50514420.

Almost surely, 2^12123432120 is an apocalyptic number.

12123432120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123432120 is an abundant number, since it is smaller than the sum of its proper divisors (24246864600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123432120 is a wasteful number, since it uses less digits than its factorization.

12123432120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101028615 (or 101028611 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12123432120 its reverse (2123432121), we get a palindrome (14246864241).

Subtracting from 12123432120 its reverse (2123432121), we obtain a palindrome (9999999999).

The spelling of 12123432120 in words is "twelve billion, one hundred twenty-three million, four hundred thirty-two thousand, one hundred twenty".