21330030000 has 100 divisors (see below), whose sum is σ = 68856277688. Its totient is φ = 5688000000.

The previous prime is 21330029939. The next prime is 21330030023. The reversal of 21330030000 is 3003312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 325501 + ... + 385500.

Almost surely, 2^21330030000 is an apocalyptic number.

21330030000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330030000 is an abundant number, since it is smaller than the sum of its proper divisors (47526247688).

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

21330030000 is an equidigital number, since it uses as much as digits as its factorization.

21330030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711032 (or 711011 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 21330030000 its reverse (3003312), we get a palindrome (21333033312).

The spelling of 21330030000 in words is "twenty-one billion, three hundred thirty million, thirty thousand".