220205 has 4 divisors (see below), whose sum is σ = 264252. Its totient is φ = 176160.

The previous prime is 220189. The next prime is 220217. The reversal of 220205 is 502022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100489 + 119716 = 317^2 + 346^2 .

It is not a de Polignac number, because 220205 - 2⁴ = 220189 is a prime.

It is a super-3 number, since 3×220205³ = 32033381235345375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22016 + ... + 22025.

It is an arithmetic number, because the mean of its divisors is an integer number (66063).

2²²⁰²⁰⁵ is an apocalyptic number.

It is an amenable number.

220205 is a deficient number, since it is larger than the sum of its proper divisors (44047).

220205 is an equidigital number, since it uses as much as digits as its factorization.

220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44046.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 220205 is about 469.2600558326. The cubic root of 220205 is about 60.3868522469.

Adding to 220205 its reverse (502022), we get a palindrome (722227).

The spelling of 220205 in words is "two hundred twenty thousand, two hundred five".