218200113 has 24 divisors (see below), whose sum is σ = 322614240. Its totient is φ = 142067520.

The previous prime is 218200109. The next prime is 218200159. The reversal of 218200113 is 311002812.

It is not a de Polignac number, because 218200113 - 2² = 218200109 is a prime.

It is a super-2 number, since 2×218200113² = 95222578626425538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218200163) 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, 85293 + ... + 87813.

It is an arithmetic number, because the mean of its divisors is an integer number (13442260).

Almost surely, 2^218200113 is an apocalyptic number.

It is an amenable number.

218200113 is a deficient number, since it is larger than the sum of its proper divisors (104414127).

218200113 is a wasteful number, since it uses less digits than its factorization.

218200113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749 (or 2746 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 218200113 is about 14771.5981870615. The cubic root of 218200113 is about 602.0302639649.

Adding to 218200113 its reverse (311002812), we get a palindrome (529202925).

The spelling of 218200113 in words is "two hundred eighteen million, two hundred thousand, one hundred thirteen".