12004181 has 16 divisors (see below), whose sum is σ = 14784000. Its totient is φ = 9516528.

The previous prime is 12004177. The next prime is 12004211. The reversal of 12004181 is 18140021.

It is not a de Polignac number, because 12004181 - 2² = 12004177 is a prime.

It is a super-2 number, since 2×12004181² = 288200722961522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4670 + ... + 6768.

It is an arithmetic number, because the mean of its divisors is an integer number (924000).

Almost surely, 2^12004181 is an apocalyptic number.

It is an amenable number.

12004181 is a deficient number, since it is larger than the sum of its proper divisors (2779819).

12004181 is a wasteful number, since it uses less digits than its factorization.

12004181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12004181 is about 3464.7050379506. The cubic root of 12004181 is about 228.9694345913.

The spelling of 12004181 in words is "twelve million, four thousand, one hundred eighty-one".