12182881 has 2 divisors, whose sum is σ = 12182882. Its totient is φ = 12182880.

The previous prime is 12182873. The next prime is 12182903. The reversal of 12182881 is 18828121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 349281 = 3440^2 + 591^2 .

It is a cyclic number.

It is not a de Polignac number, because 12182881 - 2³ = 12182873 is a prime.

It is a super-2 number, since 2×12182881² = 296845178920322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12182861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6091440 + 6091441.

It is an arithmetic number, because the mean of its divisors is an integer number (6091441).

Almost surely, 2^12182881 is an apocalyptic number.

It is an amenable number.

12182881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12182881 is an equidigital number, since it uses as much as digits as its factorization.

12182881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 31.

The square root of 12182881 is about 3490.3984013290. The cubic root of 12182881 is about 230.1000258062.

The spelling of 12182881 in words is "twelve million, one hundred eighty-two thousand, eight hundred eighty-one".