12108005 has 48 divisors (see below), whose sum is σ = 18973440. Its totient is φ = 7248384.

The previous prime is 12107987. The next prime is 12108007. The reversal of 12108005 is 50080121.

It is not a de Polignac number, because 12108005 - 2⁶ = 12107941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12108007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136001 + ... + 136089.

It is an arithmetic number, because the mean of its divisors is an integer number (395280).

Almost surely, 2^12108005 is an apocalyptic number.

It is an amenable number.

12108005 is a deficient number, since it is larger than the sum of its proper divisors (6865435).

12108005 is a wasteful number, since it uses less digits than its factorization.

12108005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 12108005 is about 3479.6558737898. The cubic root of 12108005 is about 229.6276584198.

Adding to 12108005 its reverse (50080121), we get a palindrome (62188126).

The spelling of 12108005 in words is "twelve million, one hundred eight thousand, five".