12181368 has 16 divisors (see below), whose sum is σ = 30453480. Its totient is φ = 4060448.

The previous prime is 12181343. The next prime is 12181369. The reversal of 12181368 is 86318121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253755 + ... + 253802.

Almost surely, 2^12181368 is an apocalyptic number.

It is an amenable number.

12181368 is an abundant number, since it is smaller than the sum of its proper divisors (18272112).

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

12181368 is a wasteful number, since it uses less digits than its factorization.

12181368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507566 (or 507562 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 12181368 is about 3490.1816571634. The cubic root of 12181368 is about 230.0904999873.

Adding to 12181368 its reverse (86318121), we get a palindrome (98499489).

The spelling of 12181368 in words is "twelve million, one hundred eighty-one thousand, three hundred sixty-eight".