224130221 has 8 divisors (see below), whose sum is σ = 259658304. Its totient is φ = 189479520.

The previous prime is 224130197. The next prime is 224130253. The reversal of 224130221 is 122031422.

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 224130221 - 2⁶ = 224130157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224130221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224130281) 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, 218795 + ... + 219816.

It is an arithmetic number, because the mean of its divisors is an integer number (32457288).

Almost surely, 2^224130221 is an apocalyptic number.

It is an amenable number.

224130221 is a deficient number, since it is larger than the sum of its proper divisors (35528083).

224130221 is an equidigital number, since it uses as much as digits as its factorization.

224130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438691.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 224130221 is about 14970.9792932861. The cubic root of 224130221 is about 607.4354583783.

Adding to 224130221 its reverse (122031422), we get a palindrome (346161643).

The spelling of 224130221 in words is "two hundred twenty-four million, one hundred thirty thousand, two hundred twenty-one".