330220321 has 4 divisors (see below), whose sum is σ = 331275652. Its totient is φ = 329164992.

The previous prime is 330220313. The next prime is 330220327. The reversal of 330220321 is 123022033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123022033 = 1201 ⋅102433.

It can be written as a sum of positive squares in 2 ways, for example, as 98724096 + 231496225 = 9936^2 + 15215^2 .

It is a cyclic number.

It is not a de Polignac number, because 330220321 - 2³ = 330220313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330220295 and 330220304.

It is not an unprimeable number, because it can be changed into a prime (330220327) 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, 527196 + ... + 527821.

It is an arithmetic number, because the mean of its divisors is an integer number (82818913).

Almost surely, 2^330220321 is an apocalyptic number.

It is an amenable number.

330220321 is a deficient number, since it is larger than the sum of its proper divisors (1055331).

330220321 is a wasteful number, since it uses less digits than its factorization.

330220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055330.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 330220321 is about 18171.9652487011. The cubic root of 330220321 is about 691.1960778145.

Adding to 330220321 its reverse (123022033), we get a palindrome (453242354).

It can be divided in two parts, 33022032 and 1, that added together give a palindrome (33022033).

The spelling of 330220321 in words is "three hundred thirty million, two hundred twenty thousand, three hundred twenty-one".