221104223 has 4 divisors (see below), whose sum is σ = 221136168. Its totient is φ = 221072280.

The previous prime is 221104217. The next prime is 221104231. The reversal of 221104223 is 322401122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221104223 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 (221104243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761 + ... + 21042.

It is an arithmetic number, because the mean of its divisors is an integer number (55284042).

Almost surely, 2^221104223 is an apocalyptic number.

221104223 is a deficient number, since it is larger than the sum of its proper divisors (31945).

221104223 is a wasteful number, since it uses less digits than its factorization.

221104223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31944.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221104223 is about 14869.5737329622. The cubic root of 221104223 is about 604.6893863509.

Adding to 221104223 its reverse (322401122), we get a palindrome (543505345).

The spelling of 221104223 in words is "two hundred twenty-one million, one hundred four thousand, two hundred twenty-three".