21303223130320 has 80 divisors (see below), whose sum is σ = 50371725378240. Its totient is φ = 8376488064000.

The previous prime is 21303223130303. The next prime is 21303223130351. The reversal of 21303223130320 is 2303132230312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121693255 + ... + 121868185.

It is an arithmetic number, because the mean of its divisors is an integer number (629646567228).

Almost surely, 2^{21303223130320} is an apocalyptic number.

21303223130320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303223130320 is an abundant number, since it is smaller than the sum of its proper divisors (29068502247920).

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

21303223130320 is a wasteful number, since it uses less digits than its factorization.

21303223130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200804 (or 200798 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21303223130320 its reverse (2303132230312), we get a palindrome (23606355360632).

The spelling of 21303223130320 in words is "twenty-one trillion, three hundred three billion, two hundred twenty-three million, one hundred thirty thousand, three hundred twenty".