2217220 has 24 divisors (see below), whose sum is σ = 4737600. Its totient is φ = 871392.

The previous prime is 2217217. The next prime is 2217233. The reversal of 2217220 is 227122.

2217220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2217194 and 2217203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (197400).

2^2217220 is an apocalyptic number.

2217220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217220 is an abundant number, since it is smaller than the sum of its proper divisors (2520380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217220 is a wasteful number, since it uses less digits than its factorization.

2217220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2217220 is about 1489.0332434167. The cubic root of 2217220 is about 130.3975992884.

The spelling of 2217220 in words is "two million, two hundred seventeen thousand, two hundred twenty".