21033310848 has 192 divisors, whose sum is σ = 63720730080. Its totient is φ = 6095964160.

The previous prime is 21033310847. The next prime is 21033310853. The reversal of 21033310848 is 84801333012.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (21033310847) 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 23 ways as a sum of consecutive naturals, for example, 2229790 + ... + 2239202.

Almost surely, 2^21033310848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033310848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31860365040).

21033310848 is an abundant number, since it is smaller than the sum of its proper divisors (42687419232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21033310848 is a wasteful number, since it uses less digits than its factorization.

21033310848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 21033310848 in words is "twenty-one billion, thirty-three million, three hundred ten thousand, eight hundred forty-eight".