14201221 has 2 divisors, whose sum is σ = 14201222. Its totient is φ = 14201220.

The previous prime is 14201219. The next prime is 14201233. The reversal of 14201221 is 12210241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 6305121 = 2810^2 + 2511^2 .

It is an emirp because it is prime and its reverse (12210241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14201221 - 2¹ = 14201219 is a prime.

Together with 14201219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14201921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7100610 + 7100611.

It is an arithmetic number, because the mean of its divisors is an integer number (7100611).

Almost surely, 2^14201221 is an apocalyptic number.

It is an amenable number.

14201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14201221 is an equidigital number, since it uses as much as digits as its factorization.

14201221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 14201221 is about 3768.4507426793. The cubic root of 14201221 is about 242.1634314840.

Adding to 14201221 its reverse (12210241), we get a palindrome (26411462).

The spelling of 14201221 in words is "fourteen million, two hundred one thousand, two hundred twenty-one".