12222389 has 2 divisors, whose sum is σ = 12222390. Its totient is φ = 12222388.

The previous prime is 12222367. The next prime is 12222403. The reversal of 12222389 is 98322221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7236100 + 4986289 = 2690^2 + 2233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111194 + 6111195.

It is an arithmetic number, because the mean of its divisors is an integer number (6111195).

Almost surely, 2^12222389 is an apocalyptic number.

It is an amenable number.

12222389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222389 is an equidigital number, since it uses as much as digits as its factorization.

12222389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 12222389 is about 3496.0533462749. The cubic root of 12222389 is about 230.3484887275.

The spelling of 12222389 in words is "twelve million, two hundred twenty-two thousand, three hundred eighty-nine".