220210209 has 24 divisors (see below), whose sum is σ = 339081600. Its totient is φ = 137311200.

The previous prime is 220210187. The next prime is 220210213. The reversal of 220210209 is 902012022.

It is not a de Polignac number, because 220210209 - 2⁹ = 220209697 is a prime.

It is a super-2 number, since 2×220210209² = 96985072295647362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220210191 and 220210200.

It is not an unprimeable number, because it can be changed into a prime (220210279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5359 + ... + 21659.

It is an arithmetic number, because the mean of its divisors is an integer number (14128400).

Almost surely, 2^220210209 is an apocalyptic number.

It is an amenable number.

220210209 is a deficient number, since it is larger than the sum of its proper divisors (118871391).

220210209 is a wasteful number, since it uses less digits than its factorization.

220210209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16405 (or 16402 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 220210209 is about 14839.4814262494. The cubic root of 220210209 is about 603.8732839814.

The spelling of 220210209 in words is "two hundred twenty million, two hundred ten thousand, two hundred nine".