12125144147 has 4 divisors (see below), whose sum is σ = 12125365296. Its totient is φ = 12124923000.

The previous prime is 12125144131. The next prime is 12125144149. The reversal of 12125144147 is 74144152121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12125144147 - 2⁴ = 12125144131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12125144149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40178 + ... + 160824.

It is an arithmetic number, because the mean of its divisors is an integer number (3031341324).

Almost surely, 2^12125144147 is an apocalyptic number.

12125144147 is a deficient number, since it is larger than the sum of its proper divisors (221149).

12125144147 is a wasteful number, since it uses less digits than its factorization.

12125144147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221148.

The product of its digits is 8960, while the sum is 32.

Adding to 12125144147 its reverse (74144152121), we get a palindrome (86269296268).

The spelling of 12125144147 in words is "twelve billion, one hundred twenty-five million, one hundred forty-four thousand, one hundred forty-seven".