220444243 has 2 divisors, whose sum is σ = 220444244. Its totient is φ = 220444242.

The previous prime is 220444199. The next prime is 220444303. The reversal of 220444243 is 342444022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220444243 - 2⁹ = 220443731 is a prime.

It is not a weakly prime, because it can be changed into another prime (220444943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110222121 + 110222122.

It is an arithmetic number, because the mean of its divisors is an integer number (110222122).

Almost surely, 2^220444243 is an apocalyptic number.

220444243 is a deficient number, since it is larger than the sum of its proper divisors (1).

220444243 is an equidigital number, since it uses as much as digits as its factorization.

220444243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 220444243 is about 14847.3648503699. The cubic root of 220444243 is about 604.0871354706.

Adding to 220444243 its reverse (342444022), we get a palindrome (562888265).

The spelling of 220444243 in words is "two hundred twenty million, four hundred forty-four thousand, two hundred forty-three".