222279 has 4 divisors (see below), whose sum is σ = 296376. Its totient is φ = 148184.

The previous prime is 222269. The next prime is 222289. The reversal of 222279 is 972222.

222279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (222269) and next prime (222289).

It is a cyclic number.

It is not a de Polignac number, because 222279 - 2⁵ = 222247 is a prime.

It is an Ulam number.

It is a D-number.

222279 is a lucky number.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37044 + ... + 37049.

It is an arithmetic number, because the mean of its divisors is an integer number (74094).

2²²²²⁷⁹ is an apocalyptic number.

222279 is a deficient number, since it is larger than the sum of its proper divisors (74097).

222279 is an equidigital number, since it uses as much as digits as its factorization.

222279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74096.

The product of its digits is 1008, while the sum is 24.

The square root of 222279 is about 471.4647388724. The cubic root of 222279 is about 60.5758445919.

The spelling of 222279 in words is "two hundred twenty-two thousand, two hundred seventy-nine".