220224643 has 2 divisors, whose sum is σ = 220224644. Its totient is φ = 220224642.

The previous prime is 220224607. The next prime is 220224659. The reversal of 220224643 is 346422022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220224643 - 2¹⁷ = 220093571 is a prime.

It is not a weakly prime, because it can be changed into another prime (220224143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110112321 + 110112322.

It is an arithmetic number, because the mean of its divisors is an integer number (110112322).

Almost surely, 2^220224643 is an apocalyptic number.

220224643 is a deficient number, since it is larger than the sum of its proper divisors (1).

220224643 is an equidigital number, since it uses as much as digits as its factorization.

220224643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 220224643 is about 14839.9677560297. The cubic root of 220224643 is about 603.8864776121.

Adding to 220224643 its reverse (346422022), we get a palindrome (566646665).

The spelling of 220224643 in words is "two hundred twenty million, two hundred twenty-four thousand, six hundred forty-three".