200221101 has 6 divisors (see below), whose sum is σ = 289208270. Its totient is φ = 133480728.

The previous prime is 200221067. The next prime is 200221117. The reversal of 200221101 is 101122002.

It can be written as a sum of positive squares in only one way, i.e., 187964100 + 12257001 = 13710^2 + 3501^2 .

It is not a de Polignac number, because 200221101 - 2²⁷ = 66003373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22246789 = 200221101 / (2 + 0 + 0 + 2 + 2 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200225101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11123386 + ... + 11123403.

Almost surely, 2^200221101 is an apocalyptic number.

It is an amenable number.

200221101 is a deficient number, since it is larger than the sum of its proper divisors (88987169).

200221101 is a wasteful number, since it uses less digits than its factorization.

200221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22246795 (or 22246792 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 200221101 is about 14149.9505652847. The cubic root of 200221101 is about 585.0189693608.

Adding to 200221101 its reverse (101122002), we get a palindrome (301343103).

Subtracting from 200221101 its reverse (101122002), we obtain a palindrome (99099099).

The spelling of 200221101 in words is "two hundred million, two hundred twenty-one thousand, one hundred one".