221034233 has 16 divisors (see below), whose sum is σ = 260895360. Its totient is φ = 183326976.

The previous prime is 221034223. The next prime is 221034257. The reversal of 221034233 is 332430122.

It is not a de Polignac number, because 221034233 - 2¹² = 221030137 is a prime.

It is a super-2 number, since 2×221034233² = 97712264315796578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221034223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29441 + ... + 36177.

It is an arithmetic number, because the mean of its divisors is an integer number (16305960).

Almost surely, 2^221034233 is an apocalyptic number.

It is an amenable number.

221034233 is a deficient number, since it is larger than the sum of its proper divisors (39861127).

221034233 is a wasteful number, since it uses less digits than its factorization.

221034233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 221034233 is about 14867.2200831225. The cubic root of 221034233 is about 604.6255753028.

Adding to 221034233 its reverse (332430122), we get a palindrome (553464355).

The spelling of 221034233 in words is "two hundred twenty-one million, thirty-four thousand, two hundred thirty-three".