12125570138 has 64 divisors (see below), whose sum is σ = 21633454080. Its totient is φ = 5037883200.

The previous prime is 12125570131. The next prime is 12125570141. The reversal of 12125570138 is 83107552121.

12125570138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12125570098 and 12125570107.

It is not an unprimeable number, because it can be changed into a prime (12125570131) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1390520 + ... + 1399212.

It is an arithmetic number, because the mean of its divisors is an integer number (338022720).

Almost surely, 2^12125570138 is an apocalyptic number.

12125570138 is a deficient number, since it is larger than the sum of its proper divisors (9507883942).

12125570138 is a wasteful number, since it uses less digits than its factorization.

12125570138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 12125570138 in words is "twelve billion, one hundred twenty-five million, five hundred seventy thousand, one hundred thirty-eight".