21303890112080 has 320 divisors, whose sum is σ = 55318379397120. Its totient is φ = 7595509708800.

The previous prime is 21303890111993. The next prime is 21303890112133. The reversal of 21303890112080 is 8021109830312.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2634333797 + ... + 2634341883.

It is an arithmetic number, because the mean of its divisors is an integer number (172869935616).

Almost surely, 2^{21303890112080} is an apocalyptic number.

21303890112080 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 21303890112080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27659189698560).

21303890112080 is an abundant number, since it is smaller than the sum of its proper divisors (34014489285040).

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

21303890112080 is a wasteful number, since it uses less digits than its factorization.

21303890112080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9698 (or 9692 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

Adding to 21303890112080 its reverse (8021109830312), we get a palindrome (29324999942392).

The spelling of 21303890112080 in words is "twenty-one trillion, three hundred three billion, eight hundred ninety million, one hundred twelve thousand, eighty".