222819 has 12 divisors (see below), whose sum is σ = 316824. Its totient is φ = 139264.

The previous prime is 222799. The next prime is 222823. The reversal of 222819 is 918222.

222819 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 222819 - 2⁵ = 222787 is a prime.

It is a super-2 number, since 2×222819² = 99296613522, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (222839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 739 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (26402).

2²²²⁸¹⁹ is an apocalyptic number.

222819 is a deficient number, since it is larger than the sum of its proper divisors (94005).

222819 is a wasteful number, since it uses less digits than its factorization.

222819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 277 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 222819 is about 472.0370748151. The cubic root of 222819 is about 60.6248588228.

The spelling of 222819 in words is "two hundred twenty-two thousand, eight hundred nineteen".