12102289 has 2 divisors, whose sum is σ = 12102290. Its totient is φ = 12102288.

The previous prime is 12102287. The next prime is 12102329. The reversal of 12102289 is 98220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 2274064 = 3135^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102289 - 2¹ = 12102287 is a prime.

Together with 12102287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12102287) 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, 6051144 + 6051145.

It is an arithmetic number, because the mean of its divisors is an integer number (6051145).

Almost surely, 2^12102289 is an apocalyptic number.

It is an amenable number.

12102289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102289 is an equidigital number, since it uses as much as digits as its factorization.

12102289 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 12102289 is about 3478.8344312427. The cubic root of 12102289 is about 229.5915181888.

The spelling of 12102289 in words is "twelve million, one hundred two thousand, two hundred eighty-nine".