12107105 has 4 divisors (see below), whose sum is σ = 14528532. Its totient is φ = 9685680.

The previous prime is 12107099. The next prime is 12107107. The reversal of 12107105 is 50170121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8111104 + 3996001 = 2848^2 + 1999^2 .

It is not a de Polignac number, because 12107105 - 2⁴ = 12107089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12107107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210706 + ... + 1210715.

It is an arithmetic number, because the mean of its divisors is an integer number (3632133).

Almost surely, 2^12107105 is an apocalyptic number.

It is an amenable number.

12107105 is a deficient number, since it is larger than the sum of its proper divisors (2421427).

12107105 is an equidigital number, since it uses as much as digits as its factorization.

12107105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421426.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 12107105 is about 3479.5265482534. The cubic root of 12107105 is about 229.6219687951.

Adding to 12107105 its reverse (50170121), we get a palindrome (62277226).

The spelling of 12107105 in words is "twelve million, one hundred seven thousand, one hundred five".