9933023221 has 6 divisors (see below), whose sum is σ = 10918116566. Its totient is φ = 9030021000.

The previous prime is 9933023213. The next prime is 9933023297. The reversal of 9933023221 is 1223203399.

It can be written as a sum of positive squares in only one way, i.e., 9562884100 + 370139121 = 97790^2 + 19239^2 .

It is not a de Polignac number, because 9933023221 - 2³ = 9933023213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933026221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41045430 + ... + 41045671.

Almost surely, 2^9933023221 is an apocalyptic number.

It is an amenable number.

9933023221 is a deficient number, since it is larger than the sum of its proper divisors (985093345).

9933023221 is a wasteful number, since it uses less digits than its factorization.

9933023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82091123 (or 82091112 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 9933023221 is about 99664.5534831717. The cubic root of 9933023221 is about 2149.6140082982.

The spelling of 9933023221 in words is "nine billion, nine hundred thirty-three million, twenty-three thousand, two hundred twenty-one".