21241045216320 has 448 divisors, whose sum is σ = 68744933376000. Its totient is φ = 5555766288384.

The previous prime is 21241045216277. The next prime is 21241045216337. The reversal of 21241045216320 is 2361254014212.

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, 10468725066 + ... + 10468727094.

It is an arithmetic number, because the mean of its divisors is an integer number (153448512000).

Almost surely, 2^{21241045216320} is an apocalyptic number.

21241045216320 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 21241045216320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34372466688000).

21241045216320 is an abundant number, since it is smaller than the sum of its proper divisors (47503888159680).

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

21241045216320 is a wasteful number, since it uses less digits than its factorization.

21241045216320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970 (or 2960 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 21241045216320 in words is "twenty-one trillion, two hundred forty-one billion, forty-five million, two hundred sixteen thousand, three hundred twenty".