21231020320300 has 144 divisors (see below), whose sum is σ = 52712643397120. Its totient is φ = 7270956887040.

The previous prime is 21231020320297. The next prime is 21231020320319. The reversal of 21231020320300 is 302302013212.

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, 3775743289 + ... + 3775748911.

Almost surely, 2^{21231020320300} is an apocalyptic number.

21231020320300 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 21231020320300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26356321698560).

21231020320300 is an abundant number, since it is smaller than the sum of its proper divisors (31481623076820).

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

21231020320300 is a wasteful number, since it uses less digits than its factorization.

21231020320300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800 (or 10793 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21231020320300 its reverse (302302013212), we get a palindrome (21533322333512).

The spelling of 21231020320300 in words is "twenty-one trillion, two hundred thirty-one billion, twenty million, three hundred twenty thousand, three hundred".