21033000133 has 8 divisors (see below), whose sum is σ = 22162226720. Its totient is φ = 19905996240.

The previous prime is 21033000103. The next prime is 21033000139. The reversal of 21033000133 is 33100033012.

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 21033000133 - 2²⁹ = 20496129221 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 (21033000139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536223 + ... + 574108.

It is an arithmetic number, because the mean of its divisors is an integer number (2770278340).

Almost surely, 2^21033000133 is an apocalyptic number.

It is an amenable number.

21033000133 is a deficient number, since it is larger than the sum of its proper divisors (1129226587).

21033000133 is a wasteful number, since it uses less digits than its factorization.

21033000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111347.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21033000133 its reverse (33100033012), we get a palindrome (54133033145).

The spelling of 21033000133 in words is "twenty-one billion, thirty-three million, one hundred thirty-three", and thus it is an aban number.