30320032221 has 24 divisors (see below), whose sum is σ = 45091630584. Its totient is φ = 19620195840.

The previous prime is 30320032217. The next prime is 30320032241. The reversal of 30320032221 is 12223002303.

It is a happy number.

30320032221 is a `hidden beast` number, since 3 + 0 + 320 + 0 + 322 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 134792100 + 30185240121 = 11610^2 + 173739^2 .

It is not a de Polignac number, because 30320032221 - 2² = 30320032217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30320032194 and 30320032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320032241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135856 + ... + 281241.

It is an arithmetic number, because the mean of its divisors is an integer number (1878817941).

Almost surely, 2^30320032221 is an apocalyptic number.

It is an amenable number.

30320032221 is a deficient number, since it is larger than the sum of its proper divisors (14771598363).

30320032221 is a wasteful number, since it uses less digits than its factorization.

30320032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417341 (or 417338 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30320032221 its reverse (12223002303), we get a palindrome (42543034524).

The spelling of 30320032221 in words is "thirty billion, three hundred twenty million, thirty-two thousand, two hundred twenty-one".