224021243 has 2 divisors, whose sum is σ = 224021244. Its totient is φ = 224021242.

The previous prime is 224021227. The next prime is 224021249. The reversal of 224021243 is 342120422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224021243 - 2⁴ = 224021227 is a prime.

It is not a weakly prime, because it can be changed into another prime (224021249) 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 as a sum of consecutive naturals, namely, 112010621 + 112010622.

It is an arithmetic number, because the mean of its divisors is an integer number (112010622).

Almost surely, 2^224021243 is an apocalyptic number.

224021243 is a deficient number, since it is larger than the sum of its proper divisors (1).

224021243 is an equidigital number, since it uses as much as digits as its factorization.

224021243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 224021243 is about 14967.3392090912. The cubic root of 224021243 is about 607.3369920598.

Adding to 224021243 its reverse (342120422), we get a palindrome (566141665).

The spelling of 224021243 in words is "two hundred twenty-four million, twenty-one thousand, two hundred forty-three".