220021233 has 8 divisors (see below), whose sum is σ = 297740448. Its totient is φ = 144491424.

The previous prime is 220021183. The next prime is 220021253. The reversal of 220021233 is 332120022.

220021233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 220021233 - 2⁶ = 220021169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220021253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547116 + ... + 547517.

It is an arithmetic number, because the mean of its divisors is an integer number (37217556).

Almost surely, 2^220021233 is an apocalyptic number.

It is an amenable number.

220021233 is a deficient number, since it is larger than the sum of its proper divisors (77719215).

220021233 is a wasteful number, since it uses less digits than its factorization.

220021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094703.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220021233 is about 14833.1127212059. The cubic root of 220021233 is about 603.7004942069.

Adding to 220021233 its reverse (332120022), we get a palindrome (552141255).

The spelling of 220021233 in words is "two hundred twenty million, twenty-one thousand, two hundred thirty-three".