12181160 has 32 divisors (see below), whose sum is σ = 28355400. Its totient is φ = 4704000.

The previous prime is 12181157. The next prime is 12181187. The reversal of 12181160 is 6118121.

It can be written as a sum of positive squares in 4 ways, for example, as 8773444 + 3407716 = 2962^2 + 1846^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 4091 + ... + 6410.

Almost surely, 2^12181160 is an apocalyptic number.

12181160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12181160 is an abundant number, since it is smaller than the sum of its proper divisors (16174240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12181160 is a wasteful number, since it uses less digits than its factorization.

12181160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541 (or 10537 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 12181160 is about 3490.1518591603. The cubic root of 12181160 is about 230.0891903617.

Adding to 12181160 its reverse (6118121), we get a palindrome (18299281).

The spelling of 12181160 in words is "twelve million, one hundred eighty-one thousand, one hundred sixty".