330130021 has 32 divisors (see below), whose sum is σ = 395297280. Its totient is φ = 272802816.

The previous prime is 330129977. The next prime is 330130037. The reversal of 330130021 is 120031033.

It is not a de Polignac number, because 330130021 - 2⁷ = 330129893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330129983 and 330130010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330130621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383890 + ... + 384748.

It is an arithmetic number, because the mean of its divisors is an integer number (12353040).

Almost surely, 2^330130021 is an apocalyptic number.

It is an amenable number.

330130021 is a deficient number, since it is larger than the sum of its proper divisors (65167259).

330130021 is a wasteful number, since it uses less digits than its factorization.

330130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 330130021 is about 18169.4804823913. The cubic root of 330130021 is about 691.1330686739.

Adding to 330130021 its reverse (120031033), we get a palindrome (450161054).

The spelling of 330130021 in words is "three hundred thirty million, one hundred thirty thousand, twenty-one".