12105108 has 18 divisors (see below), whose sum is σ = 30599114. Its totient is φ = 4035024.

The previous prime is 12105083. The next prime is 12105113. The reversal of 12105108 is 80150121.

12105108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7387524 + 4717584 = 2718^2 + 2172^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168091 + ... + 168162.

Almost surely, 2^12105108 is an apocalyptic number.

12105108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12105108 is an abundant number, since it is smaller than the sum of its proper divisors (18494006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12105108 is a wasteful number, since it uses less digits than its factorization.

12105108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336263 (or 336258 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 12105108 is about 3479.2395720904. The cubic root of 12105108 is about 229.6093431430.

Adding to 12105108 its reverse (80150121), we get a palindrome (92255229).

The spelling of 12105108 in words is "twelve million, one hundred five thousand, one hundred eight".