21303130032320 has 28 divisors (see below), whose sum is σ = 50728078390224. Its totient is φ = 8521252012800.

The previous prime is 21303130032313. The next prime is 21303130032383. The reversal of 21303130032320 is 2323003130312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33286140356 + ... + 33286140995.

Almost surely, 2^{21303130032320} is an apocalyptic number.

21303130032320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303130032320 is an abundant number, since it is smaller than the sum of its proper divisors (29424948357904).

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

21303130032320 is an equidigital number, since it uses as much as digits as its factorization.

21303130032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66572281368 (or 66572281358 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21303130032320 its reverse (2323003130312), we get a palindrome (23626133162632).

The spelling of 21303130032320 in words is "twenty-one trillion, three hundred three billion, one hundred thirty million, thirty-two thousand, three hundred twenty".