330021213 has 4 divisors (see below), whose sum is σ = 440028288. Its totient is φ = 220014140.

The previous prime is 330021199. The next prime is 330021217. The reversal of 330021213 is 312120033.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312120033 = 3 ⋅104040011.

It is a cyclic number.

It is not a de Polignac number, because 330021213 - 2⁹ = 330020701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 330021192 and 330021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330021217) 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, 55003533 + ... + 55003538.

It is an arithmetic number, because the mean of its divisors is an integer number (110007072).

Almost surely, 2^330021213 is an apocalyptic number.

It is an amenable number.

330021213 is a deficient number, since it is larger than the sum of its proper divisors (110007075).

330021213 is a wasteful number, since it uses less digits than its factorization.

330021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110007074.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 330021213 is about 18166.4859838110. The cubic root of 330021213 is about 691.0571298362.

Adding to 330021213 its reverse (312120033), we get a palindrome (642141246).

The spelling of 330021213 in words is "three hundred thirty million, twenty-one thousand, two hundred thirteen".