2213018 has 4 divisors (see below), whose sum is σ = 3319530. Its totient is φ = 1106508.

The previous prime is 2212979. The next prime is 2213033. The reversal of 2213018 is 8103122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2211169 + 1849 = 1487^2 + 43^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2212987 and 2213005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553253 + ... + 553256.

2^2213018 is an apocalyptic number.

2213018 is a deficient number, since it is larger than the sum of its proper divisors (1106512).

2213018 is a wasteful number, since it uses less digits than its factorization.

2213018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106511.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2213018 is about 1487.6215916691. The cubic root of 2213018 is about 130.3151721623.

The spelling of 2213018 in words is "two million, two hundred thirteen thousand, eighteen".