12500054121 has 16 divisors (see below), whose sum is σ = 17377228800. Its totient is φ = 7982650368.

The previous prime is 12500054113. The next prime is 12500054123. The reversal of 12500054121 is 12145000521.

12500054121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12500054121 - 2³ = 12500054113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12500054123) 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 15 ways as a sum of consecutive naturals, for example, 554616 + ... + 576713.

It is an arithmetic number, because the mean of its divisors is an integer number (1086076800).

Almost surely, 2^12500054121 is an apocalyptic number.

It is an amenable number.

12500054121 is a deficient number, since it is larger than the sum of its proper divisors (4877174679).

12500054121 is a wasteful number, since it uses less digits than its factorization.

12500054121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131488.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 12500054121 its reverse (12145000521), we get a palindrome (24645054642).

The spelling of 12500054121 in words is "twelve billion, five hundred million, fifty-four thousand, one hundred twenty-one".