21010313441320 has 256 divisors, whose sum is σ = 56157732864000. Its totient is φ = 6925026991104.

The previous prime is 21010313441281. The next prime is 21010313441321. The reversal of 21010313441320 is 2314431301012.

It is a super-2 number, since 2×21010313441320² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21010313441321) 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 63 ways as a sum of consecutive naturals, for example, 993056182 + ... + 993077338.

It is an arithmetic number, because the mean of its divisors is an integer number (219366144000).

Almost surely, 2^{21010313441320} is an apocalyptic number.

21010313441320 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 21010313441320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28078866432000).

21010313441320 is an abundant number, since it is smaller than the sum of its proper divisors (35147419422680).

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

21010313441320 is a wasteful number, since it uses less digits than its factorization.

21010313441320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22560 (or 22556 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21010313441320 its reverse (2314431301012), we get a palindrome (23324744742332).

The spelling of 21010313441320 in words is "twenty-one trillion, ten billion, three hundred thirteen million, four hundred forty-one thousand, three hundred twenty".