221324223 has 8 divisors (see below), whose sum is σ = 295758000. Its totient is φ = 147219968.

The previous prime is 221324203. The next prime is 221324227. The reversal of 221324223 is 322423122.

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 221324223 - 2¹³ = 221316031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221324223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221324227) 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, 80808 + ... + 83501.

It is an arithmetic number, because the mean of its divisors is an integer number (36969750).

Almost surely, 2^221324223 is an apocalyptic number.

221324223 is a deficient number, since it is larger than the sum of its proper divisors (74433777).

221324223 is a wasteful number, since it uses less digits than its factorization.

221324223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164761.

The product of its digits is 1152, while the sum is 21.

The square root of 221324223 is about 14876.9695502814. The cubic root of 221324223 is about 604.8898763659.

Adding to 221324223 its reverse (322423122), we get a palindrome (543747345).

The spelling of 221324223 in words is "two hundred twenty-one million, three hundred twenty-four thousand, two hundred twenty-three".