218860201 has 4 divisors (see below), whose sum is σ = 250125952. Its totient is φ = 187594452.

The previous prime is 218860199. The next prime is 218860207. The reversal of 218860201 is 102068812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218860201 - 2¹ = 218860199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218860201.

It is not an unprimeable number, because it can be changed into a prime (218860207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15632865 + ... + 15632878.

It is an arithmetic number, because the mean of its divisors is an integer number (62531488).

Almost surely, 2^218860201 is an apocalyptic number.

It is an amenable number.

218860201 is a deficient number, since it is larger than the sum of its proper divisors (31265751).

218860201 is an equidigital number, since it uses as much as digits as its factorization.

218860201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31265750.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 218860201 is about 14793.9244624271. The cubic root of 218860201 is about 602.6367300435.

The spelling of 218860201 in words is "two hundred eighteen million, eight hundred sixty thousand, two hundred one".