12224591 has 2 divisors, whose sum is σ = 12224592. Its totient is φ = 12224590.

The previous prime is 12224587. The next prime is 12224593. The reversal of 12224591 is 19542221.

12224591 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 is a cyclic number.

It is not a de Polignac number, because 12224591 - 2² = 12224587 is a prime.

Together with 12224593, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12224591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12224593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112295 + 6112296.

It is an arithmetic number, because the mean of its divisors is an integer number (6112296).

Almost surely, 2^12224591 is an apocalyptic number.

12224591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224591 is an equidigital number, since it uses as much as digits as its factorization.

12224591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 12224591 is about 3496.3682586364. The cubic root of 12224591 is about 230.3623211818.

The spelling of 12224591 in words is "twelve million, two hundred twenty-four thousand, five hundred ninety-one".