12225247 has 2 divisors, whose sum is σ = 12225248. Its totient is φ = 12225246.

The previous prime is 12225223. The next prime is 12225251. The reversal of 12225247 is 74252221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12225247 - 2¹¹ = 12223199 is a prime.

It is a super-2 number, since 2×12225247² = 298913328422018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12225347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112623 + 6112624.

It is an arithmetic number, because the mean of its divisors is an integer number (6112624).

Almost surely, 2^12225247 is an apocalyptic number.

12225247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225247 is an equidigital number, since it uses as much as digits as its factorization.

12225247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 25.

The square root of 12225247 is about 3496.4620690063. The cubic root of 12225247 is about 230.3664417009.

Adding to 12225247 its reverse (74252221), we get a palindrome (86477468).

The spelling of 12225247 in words is "twelve million, two hundred twenty-five thousand, two hundred forty-seven".