21330202200 has 48 divisors (see below), whose sum is σ = 66123628680. Its totient is φ = 5688053760.

The previous prime is 21330202189. The next prime is 21330202219. The reversal of 21330202200 is 220203312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21330202200.

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 11 ways as a sum of consecutive naturals, for example, 17774569 + ... + 17775768.

Almost surely, 2^21330202200 is an apocalyptic number.

21330202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330202200 is an abundant number, since it is smaller than the sum of its proper divisors (44793426480).

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

21330202200 is a wasteful number, since it uses less digits than its factorization.

21330202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35550356 (or 35550347 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21330202200 its reverse (220203312), we get a palindrome (21550405512).

The spelling of 21330202200 in words is "twenty-one billion, three hundred thirty million, two hundred two thousand, two hundred".