201008221 has 8 divisors (see below), whose sum is σ = 216440640. Its totient is φ = 185976768.

The previous prime is 201008207. The next prime is 201008233. The reversal of 201008221 is 122800102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201008221 - 2⁵ = 201008189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201008195 and 201008204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201008021) 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 7 ways as a sum of consecutive naturals, for example, 99201 + ... + 101206.

It is an arithmetic number, because the mean of its divisors is an integer number (27055080).

Almost surely, 2^201008221 is an apocalyptic number.

It is an amenable number.

201008221 is a deficient number, since it is larger than the sum of its proper divisors (15432419).

201008221 is a wasteful number, since it uses less digits than its factorization.

201008221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200483.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 201008221 is about 14177.7368081087. The cubic root of 201008221 is about 585.7845863410.

Adding to 201008221 its reverse (122800102), we get a palindrome (323808323).

The spelling of 201008221 in words is "two hundred one million, eight thousand, two hundred twenty-one".