33330030021 has 6 divisors (see below), whose sum is σ = 48143376710. Its totient is φ = 22220020008.

The previous prime is 33330030007. The next prime is 33330030031. The reversal of 33330030021 is 12003003333.

33330030021 is a `hidden beast` number, since 33 + 330 + 0 + 300 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32627196900 + 702833121 = 180630^2 + 26511^2 .

It is not a de Polignac number, because 33330030021 - 2¹⁴ = 33330013637 is a prime.

It is a super-2 number, since 2×33330030021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33330029976 and 33330030003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33330030031) 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, 1851668326 + ... + 1851668343.

Almost surely, 2^33330030021 is an apocalyptic number.

It is an amenable number.

33330030021 is a deficient number, since it is larger than the sum of its proper divisors (14813346689).

33330030021 is a wasteful number, since it uses less digits than its factorization.

33330030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703336675 (or 3703336672 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

Adding to 33330030021 its reverse (12003003333), we get a palindrome (45333033354).

The spelling of 33330030021 in words is "thirty-three billion, three hundred thirty million, thirty thousand, twenty-one".