21321322030200 has 96 divisors (see below), whose sum is σ = 66097011663360. Its totient is φ = 5685607305600.

The previous prime is 21321322030187. The next prime is 21321322030259. The reversal of 21321322030200 is 203022312312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52725177 + ... + 53128023.

It is an arithmetic number, because the mean of its divisors is an integer number (688510538160).

Almost surely, 2^{21321322030200} is an apocalyptic number.

21321322030200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321322030200 is an abundant number, since it is smaller than the sum of its proper divisors (44775689633160).

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

21321322030200 is a wasteful number, since it uses less digits than its factorization.

21321322030200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491077 (or 491068 counting only the distinct ones).

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

Adding to 21321322030200 its reverse (203022312312), we get a palindrome (21524344342512).

The spelling of 21321322030200 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twenty-two million, thirty thousand, two hundred".