30021330000 has 400 divisors, whose sum is σ = 105366272000. Its totient is φ = 7335360000.

The previous prime is 30021329869. The next prime is 30021330007. The reversal of 30021330000 is 3312003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021330007) 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 79 ways as a sum of consecutive naturals, for example, 17669151 + ... + 17670849.

It is an arithmetic number, because the mean of its divisors is an integer number (263415680).

Almost surely, 2^30021330000 is an apocalyptic number.

30021330000 is a gapful number since it is divisible by the number (30) 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 30021330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52683136000).

30021330000 is an abundant number, since it is smaller than the sum of its proper divisors (75344942000).

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

30021330000 is a wasteful number, since it uses less digits than its factorization.

30021330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1759 counting only the distinct ones).

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

Adding to 30021330000 its reverse (3312003), we get a palindrome (30024642003).

The spelling of 30021330000 in words is "thirty billion, twenty-one million, three hundred thirty thousand".