21043224022320 has 240 divisors, whose sum is σ = 71449309451520. Its totient is φ = 5549965668864.

The previous prime is 21043224022259. The next prime is 21043224022333. The reversal of 21043224022320 is 2322042234012.

21043224022320 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 3 + 22 + 402 + 232 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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, 25921299 + ... + 26720781.

It is an arithmetic number, because the mean of its divisors is an integer number (297705456048).

Almost surely, 2^{21043224022320} is an apocalyptic number.

21043224022320 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 21043224022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35724654725760).

21043224022320 is an abundant number, since it is smaller than the sum of its proper divisors (50406085429200).

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

21043224022320 is a wasteful number, since it uses less digits than its factorization.

21043224022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799904 (or 799895 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21043224022320 its reverse (2322042234012), we get a palindrome (23365266256332).

The spelling of 21043224022320 in words is "twenty-one trillion, forty-three billion, two hundred twenty-four million, twenty-two thousand, three hundred twenty".