222999 has 24 divisors (see below), whose sum is σ = 363888. Its totient is φ = 120960.

The previous prime is 222991. The next prime is 223007. The reversal of 222999 is 999222.

It is an interprime number because it is at equal distance from previous prime (222991) and next prime (223007).

It is not a de Polignac number, because 222999 - 2³ = 222991 is a prime.

222999 is a modest number, since divided by 999 gives 222 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5419 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (15162).

2²²²⁹⁹⁹ is an apocalyptic number.

222999 is a deficient number, since it is larger than the sum of its proper divisors (140889).

222999 is a wasteful number, since it uses less digits than its factorization.

222999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 88 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 222999 is about 472.2276993146. The cubic root of 222999 is about 60.6411793003.

Adding to 222999 its reverse (999222), we get a palindrome (1222221).

It can be divided in two parts, 222 and 999, that added together give a palindrome (1221).

The spelling of 222999 in words is "two hundred twenty-two thousand, nine hundred ninety-nine".