33003000021 has 8 divisors (see below), whose sum is σ = 44022261024. Its totient is φ = 21992869520.

The previous prime is 33002999977. The next prime is 33003000049. The reversal of 33003000021 is 12000030033.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33003000021 - 2⁶ = 33002999957 is a prime.

It is a super-2 number, since 2×33003000021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33002999970 and 33003000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33003000521) 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 7 ways as a sum of consecutive naturals, for example, 2274186 + ... + 2288651.

It is an arithmetic number, because the mean of its divisors is an integer number (5502782628).

Almost surely, 2^33003000021 is an apocalyptic number.

It is an amenable number.

33003000021 is a deficient number, since it is larger than the sum of its proper divisors (11019261003).

33003000021 is a wasteful number, since it uses less digits than its factorization.

33003000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565251.

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 33003000021 its reverse (12000030033), we get a palindrome (45003030054).

The spelling of 33003000021 in words is "thirty-three billion, three million, twenty-one", and thus it is an aban number and an uban number.