221004320223 has 8 divisors (see below), whose sum is σ = 299503122736. Its totient is φ = 144920865600.

The previous prime is 221004320209. The next prime is 221004320249. The reversal of 221004320223 is 322023400122.

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

It is not a de Polignac number, because 221004320223 - 2⁵ = 221004320191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221004320223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221004320323) 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 7 ways as a sum of consecutive naturals, for example, 603836758 + ... + 603837123.

It is an arithmetic number, because the mean of its divisors is an integer number (37437890342).

Almost surely, 2^221004320223 is an apocalyptic number.

221004320223 is a deficient number, since it is larger than the sum of its proper divisors (78498802513).

221004320223 is a wasteful number, since it uses less digits than its factorization.

221004320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207673945.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 221004320223 its reverse (322023400122), we get a palindrome (543027720345).

The spelling of 221004320223 in words is "two hundred twenty-one billion, four million, three hundred twenty thousand, two hundred twenty-three".