12181185 has 40 divisors (see below), whose sum is σ = 22999680. Its totient is φ = 6150816.

The previous prime is 12181157. The next prime is 12181187. The reversal of 12181185 is 58118121.

12181185 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12181185 - 2⁶ = 12181121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12181187) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6904 + ... + 8486.

It is an arithmetic number, because the mean of its divisors is an integer number (574992).

Almost surely, 2^12181185 is an apocalyptic number.

12181185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12181185 is a deficient number, since it is larger than the sum of its proper divisors (10818495).

12181185 is a wasteful number, since it uses less digits than its factorization.

12181185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1610 counting only the distinct ones).

The product of its digits is 640, while the sum is 27.

The square root of 12181185 is about 3490.1554406645. The cubic root of 12181185 is about 230.0893477694.

The spelling of 12181185 in words is "twelve million, one hundred eighty-one thousand, one hundred eighty-five".