333330221 has 4 divisors (see below), whose sum is σ = 380948832. Its totient is φ = 285711612.

The previous prime is 333330139. The next prime is 333330229. The reversal of 333330221 is 122033333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 333330221 - 2¹⁰ = 333329197 is a prime.

It is a super-2 number, since 2×333330221² = 222218072463817682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 333330193 and 333330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333330229) 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, 23809295 + ... + 23809308.

It is an arithmetic number, because the mean of its divisors is an integer number (95237208).

Almost surely, 2^333330221 is an apocalyptic number.

It is an amenable number.

333330221 is a deficient number, since it is larger than the sum of its proper divisors (47618611).

333330221 is an equidigital number, since it uses as much as digits as its factorization.

333330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47618610.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 333330221 is about 18257.3333485479. Note that the first 4 decimals coincide. The cubic root of 333330221 is about 693.3591163725.

Adding to 333330221 its reverse (122033333), we get a palindrome (455363554).

The spelling of 333330221 in words is "three hundred thirty-three million, three hundred thirty thousand, two hundred twenty-one".