221044313 has 8 divisors (see below), whose sum is σ = 252904320. Its totient is φ = 189254880.

The previous prime is 221044289. The next prime is 221044339. The reversal of 221044313 is 313440122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221044313 - 2¹⁰ = 221043289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221046313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10748 + ... + 23613.

It is an arithmetic number, because the mean of its divisors is an integer number (31613040).

Almost surely, 2^221044313 is an apocalyptic number.

It is an amenable number.

221044313 is a deficient number, since it is larger than the sum of its proper divisors (31860007).

221044313 is an equidigital number, since it uses as much as digits as its factorization.

221044313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35287.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 221044313 is about 14867.5590800911. The cubic root of 221044313 is about 604.6347662368.

Adding to 221044313 its reverse (313440122), we get a palindrome (534484435).

The spelling of 221044313 in words is "two hundred twenty-one million, forty-four thousand, three hundred thirteen".