220223209 has 4 divisors (see below), whose sum is σ = 220280320. Its totient is φ = 220166100.

The previous prime is 220223197. The next prime is 220223231. The reversal of 220223209 is 902322022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220223209 - 2¹⁷ = 220092137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220223209.

It is not an unprimeable number, because it can be changed into a prime (220223239) 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 in 3 ways as a sum of consecutive naturals, for example, 22317 + ... + 30634.

It is an arithmetic number, because the mean of its divisors is an integer number (55070080).

Almost surely, 2^220223209 is an apocalyptic number.

It is an amenable number.

220223209 is a deficient number, since it is larger than the sum of its proper divisors (57111).

220223209 is an equidigital number, since it uses as much as digits as its factorization.

220223209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57110.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 220223209 is about 14839.9194404821. The cubic root of 220223209 is about 603.8851668670.

The spelling of 220223209 in words is "two hundred twenty million, two hundred twenty-three thousand, two hundred nine".