224224421 has 2 divisors, whose sum is σ = 224224422. Its totient is φ = 224224420.

The previous prime is 224224393. The next prime is 224224463. The reversal of 224224421 is 124422422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179935396 + 44289025 = 13414^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 224224421 - 2²² = 220030117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224224621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112112210 + 112112211.

It is an arithmetic number, because the mean of its divisors is an integer number (112112211).

Almost surely, 2^224224421 is an apocalyptic number.

It is an amenable number.

224224421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224224421 is an equidigital number, since it uses as much as digits as its factorization.

224224421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 23.

The square root of 224224421 is about 14974.1250495647. The cubic root of 224224421 is about 607.5205464213.

Adding to 224224421 its reverse (124422422), we get a palindrome (348646843).

The spelling of 224224421 in words is "two hundred twenty-four million, two hundred twenty-four thousand, four hundred twenty-one".