221120223 has 4 divisors (see below), whose sum is σ = 294826968. Its totient is φ = 147413480.

The previous prime is 221120219. The next prime is 221120231. The reversal of 221120223 is 322021122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221120223 - 2² = 221120219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121223) 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, 36853368 + ... + 36853373.

It is an arithmetic number, because the mean of its divisors is an integer number (73706742).

Almost surely, 2^221120223 is an apocalyptic number.

221120223 is a deficient number, since it is larger than the sum of its proper divisors (73706745).

221120223 is an equidigital number, since it uses as much as digits as its factorization.

221120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73706744.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221120223 is about 14870.1117346172. Note that the first 3 decimals coincide. The cubic root of 221120223 is about 604.7039719261.

Adding to 221120223 its reverse (322021122), we get a palindrome (543141345).

The spelling of 221120223 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-three".