224421247 has 2 divisors, whose sum is σ = 224421248. Its totient is φ = 224421246.

The previous prime is 224421221. The next prime is 224421259. The reversal of 224421247 is 742124422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224421247 - 2²³ = 216032639 is a prime.

It is a super-2 number, since 2×224421247² = 100729792210070018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224421047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112210623 + 112210624.

It is an arithmetic number, because the mean of its divisors is an integer number (112210624).

Almost surely, 2^224421247 is an apocalyptic number.

224421247 is a deficient number, since it is larger than the sum of its proper divisors (1).

224421247 is an equidigital number, since it uses as much as digits as its factorization.

224421247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 28.

The square root of 224421247 is about 14980.6958116104. The cubic root of 224421247 is about 607.6982565735.

Adding to 224421247 its reverse (742124422), we get a palindrome (966545669).

The spelling of 224421247 in words is "two hundred twenty-four million, four hundred twenty-one thousand, two hundred forty-seven".