218033201 has 4 divisors (see below), whose sum is σ = 219370992. Its totient is φ = 216695412.

The previous prime is 218033191. The next prime is 218033237. The reversal of 218033201 is 102330812.

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 a de Polignac number, because none of the positive numbers 2^k-218033201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (218033251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668651 + ... + 668976.

It is an arithmetic number, because the mean of its divisors is an integer number (54842748).

Almost surely, 2^218033201 is an apocalyptic number.

It is an amenable number.

218033201 is a deficient number, since it is larger than the sum of its proper divisors (1337791).

218033201 is a wasteful number, since it uses less digits than its factorization.

218033201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337790.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 218033201 is about 14765.9473451587. The cubic root of 218033201 is about 601.8767172853.

The spelling of 218033201 in words is "two hundred eighteen million, thirty-three thousand, two hundred one".