218201 has 8 divisors (see below), whose sum is σ = 233280. Its totient is φ = 203632.

The previous prime is 218191. The next prime is 218213. The reversal of 218201 is 102812.

218201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 218201 - 2⁶ = 218137 is a prime.

It is a super-2 number, since 2×218201² = 95223352802, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (218401) 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, 1130 + ... + 1308.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2²¹⁸²⁰¹ is an apocalyptic number.

It is an amenable number.

218201 is a deficient number, since it is larger than the sum of its proper divisors (15079).

218201 is a wasteful number, since it uses less digits than its factorization.

218201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 218201 is about 467.1198989553. The cubic root of 218201 is about 60.2031079730.

The spelling of 218201 in words is "two hundred eighteen thousand, two hundred one".