220221223 has 2 divisors, whose sum is σ = 220221224. Its totient is φ = 220221222.

The previous prime is 220221193. The next prime is 220221227. The reversal of 220221223 is 322122022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220221223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220221197 and 220221206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110611 + 110110612.

It is an arithmetic number, because the mean of its divisors is an integer number (110110612).

Almost surely, 2^220221223 is an apocalyptic number.

220221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221223 is an equidigital number, since it uses as much as digits as its factorization.

220221223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220221223 is about 14839.8525262214. The cubic root of 220221223 is about 603.8833515580.

Adding to 220221223 its reverse (322122022), we get a palindrome (542343245).

The spelling of 220221223 in words is "two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-three".