12135 has 8 divisors (see below), whose sum is σ = 19440. Its totient is φ = 6464.

The previous prime is 12119. The next prime is 12143. The reversal of 12135 is 53121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12135 - 2⁴ = 12119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390 + ... + 419.

It is an arithmetic number, because the mean of its divisors is an integer number (2430).

2¹²¹³⁵ is an apocalyptic number.

12135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12135 is a deficient number, since it is larger than the sum of its proper divisors (7305).

12135 is an equidigital number, since it uses as much as digits as its factorization.

12135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817.

The product of its digits is 30, while the sum is 12.

The square root of 12135 is about 110.1589760301. The cubic root of 12135 is about 22.9798184656.

Adding to 12135 its reverse (53121), we get a palindrome (65256).

The spelling of 12135 in words is "twelve thousand, one hundred thirty-five".