12125444120 has 32 divisors (see below), whose sum is σ = 27419364000. Its totient is φ = 4825801728.

The previous prime is 12125444119. The next prime is 12125444143. The reversal of 12125444120 is 2144452121.

It is a self number, because there is not a number n which added to its sum of digits gives 12125444120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753689 + ... + 769608.

It is an arithmetic number, because the mean of its divisors is an integer number (856855125).

Almost surely, 2^12125444120 is an apocalyptic number.

12125444120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12125444120 is an abundant number, since it is smaller than the sum of its proper divisors (15293919880).

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

12125444120 is a wasteful number, since it uses less digits than its factorization.

12125444120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523507 (or 1523503 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 12125444120 its reverse (2144452121), we get a palindrome (14269896241).

The spelling of 12125444120 in words is "twelve billion, one hundred twenty-five million, four hundred forty-four thousand, one hundred twenty".