12102165 has 12 divisors (see below), whose sum is σ = 20977164. Its totient is φ = 6454464.

The previous prime is 12102157. The next prime is 12102199. The reversal of 12102165 is 56120121.

12102165 is digitally balanced in base 3, 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 2 ways, for example, as 3755844 + 8346321 = 1938^2 + 2889^2 .

It is not a de Polignac number, because 12102165 - 2³ = 12102157 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 134424 + ... + 134513.

It is an arithmetic number, because the mean of its divisors is an integer number (1748097).

Almost surely, 2^12102165 is an apocalyptic number.

12102165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12102165 is a deficient number, since it is larger than the sum of its proper divisors (8874999).

12102165 is a wasteful number, since it uses less digits than its factorization.

12102165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268948 (or 268945 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 12102165 is about 3478.8166091359. The cubic root of 12102165 is about 229.5907340549.

Adding to 12102165 its reverse (56120121), we get a palindrome (68222286).

It can be divided in two parts, 1210 and 2165, that added together give a cube (3375 = 15³).

The spelling of 12102165 in words is "twelve million, one hundred two thousand, one hundred sixty-five".