221320100303 has 16 divisors (see below), whose sum is σ = 225812275200. Its totient is φ = 216875543040.

The previous prime is 221320100291. The next prime is 221320100329. The reversal of 221320100303 is 303001023122.

It is a cyclic number.

It is not a de Polignac number, because 221320100303 - 2²⁶ = 221252991439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221320100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6554618 + ... + 6588296.

It is an arithmetic number, because the mean of its divisors is an integer number (14113267200).

Almost surely, 2^221320100303 is an apocalyptic number.

221320100303 is a deficient number, since it is larger than the sum of its proper divisors (4492174897).

221320100303 is a wasteful number, since it uses less digits than its factorization.

221320100303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34382.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 221320100303 its reverse (303001023122), we get a palindrome (524321123425).

The spelling of 221320100303 in words is "two hundred twenty-one billion, three hundred twenty million, one hundred thousand, three hundred three".