14221247 has 2 divisors, whose sum is σ = 14221248. Its totient is φ = 14221246.

The previous prime is 14221243. The next prime is 14221289. The reversal of 14221247 is 74212241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14221247 - 2² = 14221243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110623 + 7110624.

It is an arithmetic number, because the mean of its divisors is an integer number (7110624).

Almost surely, 2^14221247 is an apocalyptic number.

14221247 is a deficient number, since it is larger than the sum of its proper divisors (1).

14221247 is an equidigital number, since it uses as much as digits as its factorization.

14221247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 23.

The square root of 14221247 is about 3771.1068666905. The cubic root of 14221247 is about 242.2772077832.

Adding to 14221247 its reverse (74212241), we get a palindrome (88433488).

The spelling of 14221247 in words is "fourteen million, two hundred twenty-one thousand, two hundred forty-seven".