224422221 has 16 divisors (see below), whose sum is σ = 304292736. Its totient is φ = 147096576.

The previous prime is 224422217. The next prime is 224422223. The reversal of 224422221 is 122224422.

It is not a de Polignac number, because 224422221 - 2² = 224422217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224422223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75856 + ... + 78758.

It is an arithmetic number, because the mean of its divisors is an integer number (19018296).

Almost surely, 2^224422221 is an apocalyptic number.

It is an amenable number.

224422221 is a deficient number, since it is larger than the sum of its proper divisors (79870515).

224422221 is a wasteful number, since it uses less digits than its factorization.

224422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332.

The product of its digits is 1024, while the sum is 21.

The square root of 224422221 is about 14980.7283200784. The cubic root of 224422221 is about 607.6991357196.

Adding to 224422221 its reverse (122224422), we get a palindrome (346646643).

The spelling of 224422221 in words is "two hundred twenty-four million, four hundred twenty-two thousand, two hundred twenty-one".