224222421 has 8 divisors (see below), whose sum is σ = 299284704. Its totient is φ = 149320880.

The previous prime is 224222407. The next prime is 224222431. The reversal of 224222421 is 124222422.

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 224222421 - 2⁷ = 224222293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224222431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36891 + ... + 42536.

It is an arithmetic number, because the mean of its divisors is an integer number (37410588).

Almost surely, 2^224222421 is an apocalyptic number.

It is an amenable number.

224222421 is a deficient number, since it is larger than the sum of its proper divisors (75062283).

224222421 is an equidigital number, since it uses as much as digits as its factorization.

224222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80371.

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

The square root of 224222421 is about 14974.0582675506. The cubic root of 224222421 is about 607.5187401288.

Adding to 224222421 its reverse (124222422), we get a palindrome (348444843).

Subtracting from 224222421 its reverse (124222422), we obtain a palindrome (99999999).

The spelling of 224222421 in words is "two hundred twenty-four million, two hundred twenty-two thousand, four hundred twenty-one".