14221661 has 2 divisors, whose sum is σ = 14221662. Its totient is φ = 14221660.

The previous prime is 14221657. The next prime is 14221663. The reversal of 14221661 is 16612241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 4020025 = 3194^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 14221661 - 2² = 14221657 is a prime.

Together with 14221663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14221663) 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, 7110830 + 7110831.

It is an arithmetic number, because the mean of its divisors is an integer number (7110831).

Almost surely, 2^14221661 is an apocalyptic number.

It is an amenable number.

14221661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14221661 is an equidigital number, since it uses as much as digits as its factorization.

14221661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 14221661 is about 3771.1617573369. The cubic root of 14221661 is about 242.2795587676.

The spelling of 14221661 in words is "fourteen million, two hundred twenty-one thousand, six hundred sixty-one".