15014221 has 4 divisors (see below), whose sum is σ = 15023232. Its totient is φ = 15005212.

The previous prime is 15014189. The next prime is 15014227. The reversal of 15014221 is 12241051.

15014221 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12241051 = 2437 ⋅5023.

It is a cyclic number.

It is not a de Polignac number, because 15014221 - 2⁵ = 15014189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15014195 and 15014204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15014227) 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, 1195 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (3755808).

Almost surely, 2^15014221 is an apocalyptic number.

It is an amenable number.

15014221 is a deficient number, since it is larger than the sum of its proper divisors (9011).

15014221 is an equidigital number, since it uses as much as digits as its factorization.

15014221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 15014221 is about 3874.8188344747. The cubic root of 15014221 is about 246.6991205980.

Adding to 15014221 its reverse (12241051), we get a palindrome (27255272).

The spelling of 15014221 in words is "fifteen million, fourteen thousand, two hundred twenty-one".