21303244200 has 96 divisors (see below), whose sum is σ = 75474365760. Its totient is φ = 4869312000.

The previous prime is 21303244177. The next prime is 21303244211. The reversal of 21303244200 is 244230312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2531901 + ... + 2540300.

It is an arithmetic number, because the mean of its divisors is an integer number (786191310).

Almost surely, 2^21303244200 is an apocalyptic number.

21303244200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303244200 is an abundant number, since it is smaller than the sum of its proper divisors (54171121560).

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

21303244200 is a wasteful number, since it uses less digits than its factorization.

21303244200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072227 (or 5072218 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21303244200 its reverse (244230312), we get a palindrome (21547474512).

The spelling of 21303244200 in words is "twenty-one billion, three hundred three million, two hundred forty-four thousand, two hundred".