21298385333 has 8 divisors (see below), whose sum is σ = 21823206720. Its totient is φ = 20773818720.

The previous prime is 21298385323. The next prime is 21298385377. The reversal of 21298385333 is 33358389212.

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 21298385333 - 2²⁰ = 21297336757 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 (21298385323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111416 + ... + 234542.

It is an arithmetic number, because the mean of its divisors is an integer number (2727900840).

Almost surely, 2^21298385333 is an apocalyptic number.

It is an amenable number.

21298385333 is a deficient number, since it is larger than the sum of its proper divisors (524821387).

21298385333 is a wasteful number, since it uses less digits than its factorization.

21298385333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127387.

The product of its digits is 933120, while the sum is 47.

The spelling of 21298385333 in words is "twenty-one billion, two hundred ninety-eight million, three hundred eighty-five thousand, three hundred thirty-three".