21330333033 has 8 divisors (see below), whose sum is σ = 29937309600. Its totient is φ = 13471789248.

The previous prime is 21330333001. The next prime is 21330333047. The reversal of 21330333033 is 33033303312.

It is a happy number.

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

It is not a de Polignac number, because 21330333033 - 2⁵ = 21330333001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21330332994 and 21330333012.

It is not an unprimeable number, because it can be changed into a prime (21330333053) 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, 187108128 + ... + 187108241.

It is an arithmetic number, because the mean of its divisors is an integer number (3742163700).

Almost surely, 2^21330333033 is an apocalyptic number.

It is an amenable number.

21330333033 is a deficient number, since it is larger than the sum of its proper divisors (8606976567).

21330333033 is a wasteful number, since it uses less digits than its factorization.

21330333033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374216391.

The product of its (nonzero) digits is 4374, while the sum is 24.

Adding to 21330333033 its reverse (33033303312), we get a palindrome (54363636345).

The spelling of 21330333033 in words is "twenty-one billion, three hundred thirty million, three hundred thirty-three thousand, thirty-three".