221103201 has 16 divisors (see below), whose sum is σ = 329450688. Its totient is φ = 130732800.

The previous prime is 221103193. The next prime is 221103217. The reversal of 221103201 is 102301122.

It is not a de Polignac number, because 221103201 - 2³ = 221103193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221103251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80356 + ... + 83061.

It is an arithmetic number, because the mean of its divisors is an integer number (20590668).

Almost surely, 2^221103201 is an apocalyptic number.

It is an amenable number.

221103201 is a deficient number, since it is larger than the sum of its proper divisors (108347487).

221103201 is a wasteful number, since it uses less digits than its factorization.

221103201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163472.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221103201 is about 14869.5393674451. The cubic root of 221103201 is about 604.6884546734.

Adding to 221103201 its reverse (102301122), we get a palindrome (323404323).

The spelling of 221103201 in words is "two hundred twenty-one million, one hundred three thousand, two hundred one".