21031322203200 has 336 divisors, whose sum is σ = 70880914741824. Its totient is φ = 5455560499200.

The previous prime is 21031322203193. The next prime is 21031322203201. The reversal of 21031322203200 is 230222313012.

It is a happy number.

It is a super-2 number, since 2×21031322203200² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21031322203201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1019591287 + ... + 1019611913.

Almost surely, 2^{21031322203200} is an apocalyptic number.

21031322203200 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 21031322203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35440457370912).

21031322203200 is an abundant number, since it is smaller than the sum of its proper divisors (49849592538624).

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

21031322203200 is a wasteful number, since it uses less digits than its factorization.

21031322203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26430 (or 26415 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21031322203200 its reverse (230222313012), we get a palindrome (21261544516212).

The spelling of 21031322203200 in words is "twenty-one trillion, thirty-one billion, three hundred twenty-two million, two hundred three thousand, two hundred".