330100021 has 8 divisors (see below), whose sum is σ = 337259160. Its totient is φ = 323017728.

The previous prime is 330100019. The next prime is 330100027. The reversal of 330100021 is 120001033.

It can be written as a sum of positive squares in 4 ways, for example, as 13793796 + 316306225 = 3714^2 + 17785^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 330100021 - 2¹ = 330100019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330099980 and 330100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330100027) 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 7 ways as a sum of consecutive naturals, for example, 10486 + ... + 27751.

It is an arithmetic number, because the mean of its divisors is an integer number (42157395).

Almost surely, 2^330100021 is an apocalyptic number.

It is an amenable number.

330100021 is a deficient number, since it is larger than the sum of its proper divisors (7159139).

330100021 is an equidigital number, since it uses as much as digits as its factorization.

330100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38423.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 330100021 is about 18168.6549034319. The cubic root of 330100021 is about 691.1121328619.

Adding to 330100021 its reverse (120001033), we get a palindrome (450101054).

The spelling of 330100021 in words is "three hundred thirty million, one hundred thousand, twenty-one".