12032281 has 2 divisors, whose sum is σ = 12032282. Its totient is φ = 12032280.

The previous prime is 12032249. The next prime is 12032287. The reversal of 12032281 is 18223021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 67600 = 3459^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 12032281 - 2⁵ = 12032249 is a prime.

It is a super-2 number, since 2×12032281² = 289551572125922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12032287) 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, 6016140 + 6016141.

It is an arithmetic number, because the mean of its divisors is an integer number (6016141).

Almost surely, 2^12032281 is an apocalyptic number.

It is an amenable number.

12032281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12032281 is an equidigital number, since it uses as much as digits as its factorization.

12032281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12032281 is about 3468.7578468380. The cubic root of 12032281 is about 229.1479564816.

The spelling of 12032281 in words is "twelve million, thirty-two thousand, two hundred eighty-one".