12231229 has 2 divisors, whose sum is σ = 12231230. Its totient is φ = 12231228.

The previous prime is 12231227. The next prime is 12231253. The reversal of 12231229 is 92213221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 4108729 = 2850^2 + 2027^2 .

It is an emirp because it is prime and its reverse (92213221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12231229 - 2¹ = 12231227 is a prime.

Together with 12231227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231227) 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, 6115614 + 6115615.

It is an arithmetic number, because the mean of its divisors is an integer number (6115615).

Almost surely, 2^12231229 is an apocalyptic number.

It is an amenable number.

12231229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231229 is an equidigital number, since it uses as much as digits as its factorization.

12231229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 12231229 is about 3497.3174005229. The cubic root of 12231229 is about 230.4040095130.

The spelling of 12231229 in words is "twelve million, two hundred thirty-one thousand, two hundred twenty-nine".