224221331 has 2 divisors, whose sum is σ = 224221332. Its totient is φ = 224221330.

The previous prime is 224221271. The next prime is 224221351. The reversal of 224221331 is 133122422.

It is an a-pointer prime, because the next prime (224221351) can be obtained adding 224221331 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224221331 - 2¹⁴ = 224204947 is a prime.

It is a super-2 number, since 2×224221331² = 100550410550823122, which contains 22 as substring.

It is equal to p_12342350 and since 224221331 and 12342350 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (224221351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112110665 + 112110666.

It is an arithmetic number, because the mean of its divisors is an integer number (112110666).

Almost surely, 2^224221331 is an apocalyptic number.

224221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

224221331 is an equidigital number, since it uses as much as digits as its factorization.

224221331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 224221331 is about 14974.0218712275. The cubic root of 224221331 is about 607.5177556948.

Adding to 224221331 its reverse (133122422), we get a palindrome (357343753).

The spelling of 224221331 in words is "two hundred twenty-four million, two hundred twenty-one thousand, three hundred thirty-one".