224222021 has 8 divisors (see below), whose sum is σ = 236458080. Its totient is φ = 212029488.

The previous prime is 224221979. The next prime is 224222041. The reversal of 224222021 is 120222422.

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 224222021 - 2¹⁴ = 224205637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224222041) 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, 11 + ... + 21176.

It is an arithmetic number, because the mean of its divisors is an integer number (29557260).

Almost surely, 2^224222021 is an apocalyptic number.

It is an amenable number.

224222021 is a deficient number, since it is larger than the sum of its proper divisors (12236059).

224222021 is a wasteful number, since it uses less digits than its factorization.

224222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21763.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 224222021 is about 14974.0449111120. The cubic root of 224222021 is about 607.5183788690.

Adding to 224222021 its reverse (120222422), we get a palindrome (344444443).

The spelling of 224222021 in words is "two hundred twenty-four million, two hundred twenty-two thousand, twenty-one".