12125104155 has 24 divisors (see below), whose sum is σ = 21026007600. Its totient is φ = 6463903680.

The previous prime is 12125104091. The next prime is 12125104193. The reversal of 12125104155 is 55140152121.

It is a happy number.

12125104155 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 12125104155 - 2⁶ = 12125104091 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 47796 + ... + 162894.

It is an arithmetic number, because the mean of its divisors is an integer number (876083650).

Almost surely, 2^12125104155 is an apocalyptic number.

12125104155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12125104155 is a deficient number, since it is larger than the sum of its proper divisors (8900903445).

12125104155 is a wasteful number, since it uses less digits than its factorization.

12125104155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117451 (or 117448 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 12125104155 its reverse (55140152121), we get a palindrome (67265256276).

The spelling of 12125104155 in words is "twelve billion, one hundred twenty-five million, one hundred four thousand, one hundred fifty-five".