14243221 has 2 divisors, whose sum is σ = 14243222. Its totient is φ = 14243220.

The previous prime is 14243213. The next prime is 14243231. The reversal of 14243221 is 12234241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12680721 + 1562500 = 3561^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 14243221 - 2³ = 14243213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14243231) 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, 7121610 + 7121611.

It is an arithmetic number, because the mean of its divisors is an integer number (7121611).

Almost surely, 2^14243221 is an apocalyptic number.

It is an amenable number.

14243221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14243221 is an equidigital number, since it uses as much as digits as its factorization.

14243221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 19.

The square root of 14243221 is about 3774.0192103380. The cubic root of 14243221 is about 242.4019286717.

Adding to 14243221 its reverse (12234241), we get a palindrome (26477462).

The spelling of 14243221 in words is "fourteen million, two hundred forty-three thousand, two hundred twenty-one".