2200221 has 12 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 1456200.

The previous prime is 2200217. The next prime is 2200277. The reversal of 2200221 is 1220022.

It is not a de Polignac number, because 2200221 - 2² = 2200217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (266760).

2^2200221 is an apocalyptic number.

It is an amenable number.

2200221 is a deficient number, since it is larger than the sum of its proper divisors (1000899).

2200221 is a wasteful number, since it uses less digits than its factorization.

2200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2200221 is about 1483.3141946331. The cubic root of 2200221 is about 130.0634995501.

Adding to 2200221 its reverse (1220022), we get a palindrome (3420243).

The spelling of 2200221 in words is "two million, two hundred thousand, two hundred twenty-one".