12180135 has 16 divisors (see below), whose sum is σ = 21260160. Its totient is φ = 5905440.

The previous prime is 12180101. The next prime is 12180151. The reversal of 12180135 is 53108121.

It is not a de Polignac number, because 12180135 - 2²⁰ = 11131559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36745 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (1328760).

Almost surely, 2^12180135 is an apocalyptic number.

12180135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12180135 is a deficient number, since it is larger than the sum of its proper divisors (9080025).

12180135 is a wasteful number, since it uses less digits than its factorization.

12180135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73838.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12180135 is about 3490.0050143230. The cubic root of 12180135 is about 230.0827364597.

Adding to 12180135 its reverse (53108121), we get a palindrome (65288256).

The spelling of 12180135 in words is "twelve million, one hundred eighty thousand, one hundred thirty-five".