224313221 has 16 divisors (see below), whose sum is σ = 261964800. Its totient is φ = 189903600.

The previous prime is 224313209. The next prime is 224313233. The reversal of 224313221 is 122313422.

It is an interprime number because it is at equal distance from previous prime (224313209) and next prime (224313233).

It is a cyclic number.

It is not a de Polignac number, because 224313221 - 2⁶ = 224313157 is a prime.

It is a super-2 number, since 2×224313221² = 100632842230789682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224313193 and 224313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224313421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3236 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (16372800).

Almost surely, 2^224313221 is an apocalyptic number.

It is an amenable number.

224313221 is a deficient number, since it is larger than the sum of its proper divisors (37651579).

224313221 is a wasteful number, since it uses less digits than its factorization.

224313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280.

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

The square root of 224313221 is about 14977.0898708661. The cubic root of 224313221 is about 607.6007349874.

Adding to 224313221 its reverse (122313422), we get a palindrome (346626643).

It can be divided in two parts, 22431 and 3221, that added together give a palindrome (25652).

The spelling of 224313221 in words is "two hundred twenty-four million, three hundred thirteen thousand, two hundred twenty-one".