222005 has 8 divisors (see below), whose sum is σ = 304512. Its totient is φ = 152208.

The previous prime is 221999. The next prime is 222007. The reversal of 222005 is 500222.

222005 = 62² + 63² + ... + 96².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222005 - 2⁴ = 221989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3137 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (38064).

2²²²⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

222005 is a deficient number, since it is larger than the sum of its proper divisors (82507).

222005 is an equidigital number, since it uses as much as digits as its factorization.

222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355.

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

The square root of 222005 is about 471.1740655002. The cubic root of 222005 is about 60.5509440450.

Adding to 222005 its reverse (500222), we get a palindrome (722227).

The spelling of 222005 in words is "two hundred twenty-two thousand, five".