12090229 has 2 divisors, whose sum is σ = 12090230. Its totient is φ = 12090228.

The previous prime is 12090173. The next prime is 12090241. The reversal of 12090229 is 92209021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7969329 + 4120900 = 2823^2 + 2030^2 .

It is a cyclic number.

It is not a de Polignac number, because 12090229 - 2⁷ = 12090101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12090259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045114 + 6045115.

It is an arithmetic number, because the mean of its divisors is an integer number (6045115).

Almost surely, 2^12090229 is an apocalyptic number.

It is an amenable number.

12090229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12090229 is an equidigital number, since it uses as much as digits as its factorization.

12090229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 12090229 is about 3477.1006600327. The cubic root of 12090229 is about 229.5152297568.

The spelling of 12090229 in words is "twelve million, ninety thousand, two hundred twenty-nine".