224324221 has 16 divisors (see below), whose sum is σ = 255911040. Its totient is φ = 194641920.

The previous prime is 224324209. The next prime is 224324227. The reversal of 224324221 is 122423422.

It is a de Polignac number, because none of the positive numbers 2^k-224324221 is a prime.

It is a super-2 number, since 2×224324221² = 100642712254513682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 224324192 and 224324201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224324227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193981 + ... + 195133.

It is an arithmetic number, because the mean of its divisors is an integer number (15994440).

Almost surely, 2^224324221 is an apocalyptic number.

It is an amenable number.

224324221 is a deficient number, since it is larger than the sum of its proper divisors (31586819).

224324221 is a wasteful number, since it uses less digits than its factorization.

224324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its digits is 1536, while the sum is 22.

The square root of 224324221 is about 14977.4570939128. The cubic root of 224324221 is about 607.6106667825.

Adding to 224324221 its reverse (122423422), we get a palindrome (346747643).

The spelling of 224324221 in words is "two hundred twenty-four million, three hundred twenty-four thousand, two hundred twenty-one".