12122389 has 2 divisors, whose sum is σ = 12122390. Its totient is φ = 12122388.

The previous prime is 12122387. The next prime is 12122401. The reversal of 12122389 is 98322121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 3301489 = 2970^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122389 - 2¹ = 12122387 is a prime.

Together with 12122387, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122387) 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, 6061194 + 6061195.

It is an arithmetic number, because the mean of its divisors is an integer number (6061195).

Almost surely, 2^12122389 is an apocalyptic number.

It is an amenable number.

12122389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122389 is an equidigital number, since it uses as much as digits as its factorization.

12122389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 12122389 is about 3481.7221313597. The cubic root of 12122389 is about 229.7185530292.

The spelling of 12122389 in words is "twelve million, one hundred twenty-two thousand, three hundred eighty-nine".