12288281 has 2 divisors, whose sum is σ = 12288282. Its totient is φ = 12288280.

The previous prime is 12288277. The next prime is 12288293. The reversal of 12288281 is 18288221.

12288281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11256025 + 1032256 = 3355^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 12288281 - 2² = 12288277 is a prime.

It is a super-2 number, since 2×12288281² = 302003699869922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12288581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6144140 + 6144141.

It is an arithmetic number, because the mean of its divisors is an integer number (6144141).

Almost surely, 2^12288281 is an apocalyptic number.

It is an amenable number.

12288281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12288281 is an equidigital number, since it uses as much as digits as its factorization.

12288281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4096, while the sum is 32.

The square root of 12288281 is about 3505.4644485432. The cubic root of 12288281 is about 230.7616902294.

The spelling of 12288281 in words is "twelve million, two hundred eighty-eight thousand, two hundred eighty-one".