333220221 has 6 divisors (see below), whose sum is σ = 481318110. Its totient is φ = 222146808.

The previous prime is 333220207. The next prime is 333220229. The reversal of 333220221 is 122022333.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 279725625 + 53494596 = 16725^2 + 7314^2 .

It is not a de Polignac number, because 333220221 - 2⁵ = 333220189 is a prime.

It is a super-2 number, since 2×333220221² = 222071431366577682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 333220194 and 333220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333220229) 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 5 ways as a sum of consecutive naturals, for example, 18512226 + ... + 18512243.

It is an arithmetic number, because the mean of its divisors is an integer number (80219685).

Almost surely, 2^333220221 is an apocalyptic number.

It is an amenable number.

333220221 is a deficient number, since it is larger than the sum of its proper divisors (148097889).

333220221 is a wasteful number, since it uses less digits than its factorization.

333220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37024475 (or 37024472 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 333220221 is about 18254.3206118442. The cubic root of 333220221 is about 693.2828377662.

Adding to 333220221 its reverse (122022333), we get a palindrome (455242554).

The spelling of 333220221 in words is "three hundred thirty-three million, two hundred twenty thousand, two hundred twenty-one".