12012289 has 2 divisors, whose sum is σ = 12012290. Its totient is φ = 12012288.

The previous prime is 12012281. The next prime is 12012331. The reversal of 12012289 is 98221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11675889 + 336400 = 3417^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012289 - 2³ = 12012281 is a prime.

It is not a weakly prime, because it can be changed into another prime (12012281) 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, 6006144 + 6006145.

It is an arithmetic number, because the mean of its divisors is an integer number (6006145).

Almost surely, 2^12012289 is an apocalyptic number.

It is an amenable number.

12012289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012289 is an equidigital number, since it uses as much as digits as its factorization.

12012289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12012289 is about 3465.8749256140. The cubic root of 12012289 is about 229.0209740329.

The spelling of 12012289 in words is "twelve million, twelve thousand, two hundred eighty-nine".