12224189 has 2 divisors, whose sum is σ = 12224190. Its totient is φ = 12224188.

The previous prime is 12224159. The next prime is 12224209. The reversal of 12224189 is 98142221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6416089 + 5808100 = 2533^2 + 2410^2 .

It is an emirp because it is prime and its reverse (98142221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12224189 - 2⁸ = 12223933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12224129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112094 + 6112095.

It is an arithmetic number, because the mean of its divisors is an integer number (6112095).

Almost surely, 2^12224189 is an apocalyptic number.

It is an amenable number.

12224189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224189 is an equidigital number, since it uses as much as digits as its factorization.

12224189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 12224189 is about 3496.3107699402. The cubic root of 12224189 is about 230.3597960348.

The spelling of 12224189 in words is "twelve million, two hundred twenty-four thousand, one hundred eighty-nine".