12224209 has 2 divisors, whose sum is σ = 12224210. Its totient is φ = 12224208.

The previous prime is 12224189. The next prime is 12224213. The reversal of 12224209 is 90242221.

12224209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 3814209 = 2900^2 + 1953^2 .

It is an emirp because it is prime and its reverse (90242221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12224209 - 2⁷ = 12224081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12224209.

It is not a weakly prime, because it can be changed into another prime (12224279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112104 + 6112105.

It is an arithmetic number, because the mean of its divisors is an integer number (6112105).

Almost surely, 2^12224209 is an apocalyptic number.

It is an amenable number.

12224209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224209 is an equidigital number, since it uses as much as digits as its factorization.

12224209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12224209 is about 3496.3136300967. The cubic root of 12224209 is about 230.3599216653.

The spelling of 12224209 in words is "twelve million, two hundred twenty-four thousand, two hundred nine".