12125535105 has 32 divisors (see below), whose sum is σ = 19934014464. Its totient is φ = 6289387776.

The previous prime is 12125535089. The next prime is 12125535113. The reversal of 12125535105 is 50153552121.

It is not a de Polignac number, because 12125535105 - 2⁴ = 12125535089 is a prime.

It is a super-2 number, since 2×12125535105² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2002192 + ... + 2008238.

It is an arithmetic number, because the mean of its divisors is an integer number (622937952).

Almost surely, 2^12125535105 is an apocalyptic number.

12125535105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12125535105 is a deficient number, since it is larger than the sum of its proper divisors (7808479359).

12125535105 is a wasteful number, since it uses less digits than its factorization.

12125535105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9705.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 12125535105 in words is "twelve billion, one hundred twenty-five million, five hundred thirty-five thousand, one hundred five".