14818221 has 20 divisors (see below), whose sum is σ = 24149664. Its totient is φ = 8980200.

The previous prime is 14818201. The next prime is 14818231. The reversal of 14818221 is 12281841.

It is not a de Polignac number, because 14818221 - 2¹⁰ = 14817197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14818201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7425 + ... + 9206.

Almost surely, 2^14818221 is an apocalyptic number.

14818221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14818221 is a deficient number, since it is larger than the sum of its proper divisors (9331443).

14818221 is a wasteful number, since it uses less digits than its factorization.

14818221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16654 (or 16645 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 14818221 is about 3849.4442456022. Note that the first 3 decimals coincide. The cubic root of 14818221 is about 245.6209212073.

The spelling of 14818221 in words is "fourteen million, eight hundred eighteen thousand, two hundred twenty-one".