12361181 has 12 divisors (see below), whose sum is σ = 14440608. Its totient is φ = 10550232.

The previous prime is 12361177. The next prime is 12361187. The reversal of 12361181 is 18116321.

It is not a de Polignac number, because 12361181 - 2² = 12361177 is a prime.

It is a super-2 number, since 2×12361181² = 305597591429522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16640 + ... + 17366.

It is an arithmetic number, because the mean of its divisors is an integer number (1203384).

Almost surely, 2^12361181 is an apocalyptic number.

It is an amenable number.

12361181 is a deficient number, since it is larger than the sum of its proper divisors (2079427).

12361181 is an equidigital number, since it uses as much as digits as its factorization.

12361181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1081 counting only the distinct ones).

The product of its digits is 288, while the sum is 23.

The square root of 12361181 is about 3515.8471240940. The cubic root of 12361181 is about 231.2171206237.

The spelling of 12361181 in words is "twelve million, three hundred sixty-one thousand, one hundred eighty-one".