21003330000 has 200 divisors, whose sum is σ = 71791619328. Its totient is φ = 5271296000.

The previous prime is 21003329993. The next prime is 21003330013. The reversal of 21003330000 is 3330012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×21003330000² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 489409 + ... + 530591.

Almost surely, 2^21003330000 is an apocalyptic number.

21003330000 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 21003330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35895809664).

21003330000 is an abundant number, since it is smaller than the sum of its proper divisors (50788289328).

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

21003330000 is a wasteful number, since it uses less digits than its factorization.

21003330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41231 (or 41210 counting only the distinct ones).

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

Adding to 21003330000 its sum of digits (12), we get a palindrome (21003330012).

Adding to 21003330000 its reverse (3330012), we get a palindrome (21006660012).

The spelling of 21003330000 in words is "twenty-one billion, three million, three hundred thirty thousand".