12224749 has 2 divisors, whose sum is σ = 12224750. Its totient is φ = 12224748.

The previous prime is 12224731. The next prime is 12224759. The reversal of 12224749 is 94742221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 79524 = 3485^2 + 282^2 .

It is a cyclic number.

It is not a de Polignac number, because 12224749 - 2¹⁹ = 11700461 is a prime.

It is a super-2 number, since 2×12224749² = 298888976226002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12224749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12224759) 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, 6112374 + 6112375.

It is an arithmetic number, because the mean of its divisors is an integer number (6112375).

Almost surely, 2^12224749 is an apocalyptic number.

It is an amenable number.

12224749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224749 is an equidigital number, since it uses as much as digits as its factorization.

12224749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 12224749 is about 3496.3908534373. The cubic root of 12224749 is about 230.3633136374.

The spelling of 12224749 in words is "twelve million, two hundred twenty-four thousand, seven hundred forty-nine".