330506221 has 4 divisors (see below), whose sum is σ = 341167744. Its totient is φ = 319844700.

The previous prime is 330506219. The next prime is 330506227. The reversal of 330506221 is 122605033.

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: 122605033 = 73 ⋅1679521.

It is a cyclic number.

It is not a de Polignac number, because 330506221 - 2¹ = 330506219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330506192 and 330506201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330506227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330715 + ... + 5330776.

It is an arithmetic number, because the mean of its divisors is an integer number (85291936).

Almost surely, 2^330506221 is an apocalyptic number.

330506221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

330506221 is a deficient number, since it is larger than the sum of its proper divisors (10661523).

330506221 is a wasteful number, since it uses less digits than its factorization.

330506221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661522.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 330506221 is about 18179.8300597118. The cubic root of 330506221 is about 691.3954961456.

The spelling of 330506221 in words is "three hundred thirty million, five hundred six thousand, two hundred twenty-one".