221033201 has 16 divisors (see below), whose sum is σ = 243105984. Its totient is φ = 200116224.

The previous prime is 221033177. The next prime is 221033249. The reversal of 221033201 is 102330122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221033201 - 2¹⁰ = 221032177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221033801) 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, 46721 + ... + 51233.

It is an arithmetic number, because the mean of its divisors is an integer number (15194124).

Almost surely, 2^221033201 is an apocalyptic number.

It is an amenable number.

221033201 is a deficient number, since it is larger than the sum of its proper divisors (22072783).

221033201 is a wasteful number, since it uses less digits than its factorization.

221033201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221033201 is about 14867.1853758538. The cubic root of 221033201 is about 604.6246343105.

Adding to 221033201 its reverse (102330122), we get a palindrome (323363323).

The spelling of 221033201 in words is "two hundred twenty-one million, thirty-three thousand, two hundred one".