14286221 has 4 divisors (see below), whose sum is σ = 14304444. Its totient is φ = 14268000.

The previous prime is 14286211. The next prime is 14286229. The reversal of 14286221 is 12268241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6100900 + 8185321 = 2470^2 + 2861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14286221 is a prime.

It is a super-2 number, since 2×14286221² = 408192220921682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14286229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7880 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (3576111).

Almost surely, 2^14286221 is an apocalyptic number.

It is an amenable number.

14286221 is a deficient number, since it is larger than the sum of its proper divisors (18223).

14286221 is an equidigital number, since it uses as much as digits as its factorization.

14286221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18222.

The product of its digits is 1536, while the sum is 26.

The square root of 14286221 is about 3779.7117614972. The cubic root of 14286221 is about 242.6456191325.

The spelling of 14286221 in words is "fourteen million, two hundred eighty-six thousand, two hundred twenty-one".