201110221 has 16 divisors (see below), whose sum is σ = 232243200. Its totient is φ = 172493568.

The previous prime is 201110213. The next prime is 201110257. The reversal of 201110221 is 122011102.

It is not a de Polignac number, because 201110221 - 2³ = 201110213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110198 and 201110207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11700 + ... + 23218.

It is an arithmetic number, because the mean of its divisors is an integer number (14515200).

Almost surely, 2^201110221 is an apocalyptic number.

It is an amenable number.

201110221 is a deficient number, since it is larger than the sum of its proper divisors (31132979).

201110221 is a wasteful number, since it uses less digits than its factorization.

201110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 201110221 is about 14181.3335409615. Note that the first 3 decimals coincide. The cubic root of 201110221 is about 585.8836534733.

Adding to 201110221 its reverse (122011102), we get a palindrome (323121323).

The spelling of 201110221 in words is "two hundred one million, one hundred ten thousand, two hundred twenty-one".