12816229 has 8 divisors (see below), whose sum is σ = 13087008. Its totient is φ = 12547920.

The previous prime is 12816211. The next prime is 12816247. The reversal of 12816229 is 92261821.

It is an interprime number because it is at equal distance from previous prime (12816211) and next prime (12816247).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12816229 - 2⁹ = 12815717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12816229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816259) 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 in 7 ways as a sum of consecutive naturals, for example, 12714 + ... + 13684.

It is an arithmetic number, because the mean of its divisors is an integer number (1635876).

Almost surely, 2^12816229 is an apocalyptic number.

It is an amenable number.

12816229 is a deficient number, since it is larger than the sum of its proper divisors (270779).

12816229 is an equidigital number, since it uses as much as digits as its factorization.

12816229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235.

The product of its digits is 3456, while the sum is 31.

The square root of 12816229 is about 3579.9761172388. The cubic root of 12816229 is about 234.0202395623.

The spelling of 12816229 in words is "twelve million, eight hundred sixteen thousand, two hundred twenty-nine".