21130333000 has 128 divisors (see below), whose sum is σ = 56573637120. Its totient is φ = 7236345600.

The previous prime is 21130332989. The next prime is 21130333009. The reversal of 21130333000 is 33303112.

It is not an unprimeable number, because it can be changed into a prime (21130333009) 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 31 ways as a sum of consecutive naturals, for example, 11850109 + ... + 11851891.

It is an arithmetic number, because the mean of its divisors is an integer number (441981540).

Almost surely, 2^21130333000 is an apocalyptic number.

21130333000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21130333000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28286818560).

21130333000 is an abundant number, since it is smaller than the sum of its proper divisors (35443304120).

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

21130333000 is a wasteful number, since it uses less digits than its factorization.

21130333000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3490 counting only the distinct ones).

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

Adding to 21130333000 its reverse (33303112), we get a palindrome (21163636112).

The spelling of 21130333000 in words is "twenty-one billion, one hundred thirty million, three hundred thirty-three thousand".