222018 has 8 divisors (see below), whose sum is σ = 444048. Its totient is φ = 74004.

The previous prime is 222011. The next prime is 222023. The reversal of 222018 is 810222.

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

222018 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221988 and 222006.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 222018.

It is not an unprimeable number, because it can be changed into a prime (222011) by changing a digit.

222018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18496 + ... + 18507.

It is an arithmetic number, because the mean of its divisors is an integer number (55506).

2²²²⁰¹⁸ is an apocalyptic number.

222018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222018 is a wasteful number, since it uses less digits than its factorization.

222018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37008.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 222018 is about 471.1878606246. The cubic root of 222018 is about 60.5521259206.

The spelling of 222018 in words is "two hundred twenty-two thousand, eighteen".