221120233 has 16 divisors (see below), whose sum is σ = 240926400. Its totient is φ = 202245120.

The previous prime is 221120231. The next prime is 221120239. The reversal of 221120233 is 332021122.

221120233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221120233 - 2¹ = 221120231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71193 + ... + 74233.

It is an arithmetic number, because the mean of its divisors is an integer number (15057900).

Almost surely, 2^221120233 is an apocalyptic number.

It is an amenable number.

221120233 is a deficient number, since it is larger than the sum of its proper divisors (19806167).

221120233 is a wasteful number, since it uses less digits than its factorization.

221120233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 221120233 is about 14870.1120708621. The cubic root of 221120233 is about 604.7039810418.

Adding to 221120233 its reverse (332021122), we get a palindrome (553141355).

The spelling of 221120233 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred thirty-three".