333030221 has 4 divisors (see below), whose sum is σ = 352620252. Its totient is φ = 313440192.

The previous prime is 333030211. The next prime is 333030277. The reversal of 333030221 is 122030333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 302934025 + 30096196 = 17405^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 333030221 - 2¹⁸ = 332768077 is a prime.

It is a super-2 number, since 2×333030221² = 221818256198617682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 19590013 = 333030221 / (3 + 3 + 3 + 0 + 3 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 333030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333030211) 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, 9794990 + ... + 9795023.

It is an arithmetic number, because the mean of its divisors is an integer number (88155063).

Almost surely, 2^333030221 is an apocalyptic number.

It is an amenable number.

333030221 is a deficient number, since it is larger than the sum of its proper divisors (19590031).

333030221 is a wasteful number, since it uses less digits than its factorization.

333030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19590030.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 333030221 is about 18249.1156224076. The cubic root of 333030221 is about 693.1510442607.

Adding to 333030221 its reverse (122030333), we get a palindrome (455060554).

The spelling of 333030221 in words is "three hundred thirty-three million, thirty thousand, two hundred twenty-one".