201000221 has 8 divisors (see below), whose sum is σ = 215572320. Its totient is φ = 186827472.

The previous prime is 201000211. The next prime is 201000229. The reversal of 201000221 is 122000102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201000221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201000199 and 201000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98795 + ... + 100808.

It is an arithmetic number, because the mean of its divisors is an integer number (26946540).

Almost surely, 2^201000221 is an apocalyptic number.

It is an amenable number.

201000221 is a deficient number, since it is larger than the sum of its proper divisors (14572099).

201000221 is a wasteful number, since it uses less digits than its factorization.

201000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199675.

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

The square root of 201000221 is about 14177.4546728247. The cubic root of 201000221 is about 585.7768149526.

Adding to 201000221 its reverse (122000102), we get a palindrome (323000323).

The spelling of 201000221 in words is "two hundred one million, two hundred twenty-one", and thus it is an aban number.