14066221 has 4 divisors (see below), whose sum is σ = 15148252. Its totient is φ = 12984192.

The previous prime is 14066209. The next prime is 14066231. The reversal of 14066221 is 12266041.

14066221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1920996 + 12145225 = 1386^2 + 3485^2 .

It is a de Polignac number, because none of the positive numbers 2^k-14066221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14066192 and 14066201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14066231) 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, 540996 + ... + 541021.

It is an arithmetic number, because the mean of its divisors is an integer number (3787063).

Almost surely, 2^14066221 is an apocalyptic number.

It is an amenable number.

14066221 is a deficient number, since it is larger than the sum of its proper divisors (1082031).

14066221 is a wasteful number, since it uses less digits than its factorization.

14066221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082030.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 14066221 is about 3750.4961005179. The cubic root of 14066221 is about 241.3936336724.

The spelling of 14066221 in words is "fourteen million, sixty-six thousand, two hundred twenty-one".