21353512304200 has 192 divisors, whose sum is σ = 51085370952000. Its totient is φ = 8296256640000.

The previous prime is 21353512304161. The next prime is 21353512304231. The reversal of 21353512304200 is 240321535312.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1409558226 + ... + 1409573374.

It is an arithmetic number, because the mean of its divisors is an integer number (266069640375).

Almost surely, 2^{21353512304200} is an apocalyptic number.

21353512304200 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 21353512304200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25542685476000).

21353512304200 is an abundant number, since it is smaller than the sum of its proper divisors (29731858647800).

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

21353512304200 is a wasteful number, since it uses less digits than its factorization.

21353512304200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16112 (or 16103 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 21353512304200 its reverse (240321535312), we get a palindrome (21593833839512).

The spelling of 21353512304200 in words is "twenty-one trillion, three hundred fifty-three billion, five hundred twelve million, three hundred four thousand, two hundred".