330916221 has 24 divisors (see below), whose sum is σ = 482562080. Its totient is φ = 218513376.

The previous prime is 330916219. The next prime is 330916231. The reversal of 330916221 is 122619033.

330916221 is a `hidden beast` number, since 3 + 30 + 9 + 1 + 622 + 1 = 666.

It is not a de Polignac number, because 330916221 - 2¹ = 330916219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330916231) 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 23 ways as a sum of consecutive naturals, for example, 632466 + ... + 632988.

Almost surely, 2^330916221 is an apocalyptic number.

It is an amenable number.

330916221 is a deficient number, since it is larger than the sum of its proper divisors (151645859).

330916221 is a wasteful number, since it uses less digits than its factorization.

330916221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 330916221 is about 18191.1027977965. The cubic root of 330916221 is about 691.6812749483.

The spelling of 330916221 in words is "three hundred thirty million, nine hundred sixteen thousand, two hundred twenty-one".