2218133 has 4 divisors (see below), whose sum is σ = 2221248. Its totient is φ = 2215020.

The previous prime is 2218129. The next prime is 2218157. The reversal of 2218133 is 3318122.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2218133 - 2² = 2218129 is a prime.

It is a super-2 number, since 2×2218133² = 9840228011378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (555312).

2^2218133 is an apocalyptic number.

It is an amenable number.

2218133 is a deficient number, since it is larger than the sum of its proper divisors (3115).

2218133 is a wasteful number, since it uses less digits than its factorization.

2218133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114.

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

The square root of 2218133 is about 1489.3397866169. The cubic root of 2218133 is about 130.4154950724.

The spelling of 2218133 in words is "two million, two hundred eighteen thousand, one hundred thirty-three".