14156221 has 2 divisors, whose sum is σ = 14156222. Its totient is φ = 14156220.

The previous prime is 14156213. The next prime is 14156239. The reversal of 14156221 is 12265141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 3463321 = 3270^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 14156221 - 2³ = 14156213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14156192 and 14156201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14156921) 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, 7078110 + 7078111.

It is an arithmetic number, because the mean of its divisors is an integer number (7078111).

Almost surely, 2^14156221 is an apocalyptic number.

It is an amenable number.

14156221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14156221 is an equidigital number, since it uses as much as digits as its factorization.

14156221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 14156221 is about 3762.4753819793. The cubic root of 14156221 is about 241.9073763879.

The spelling of 14156221 in words is "fourteen million, one hundred fifty-six thousand, two hundred twenty-one".