21132210012320 has 48 divisors (see below), whose sum is σ = 54463468536288. Its totient is φ = 7684440003840.

The previous prime is 21132210012317. The next prime is 21132210012413. The reversal of 21132210012320 is 2321001223112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21132210012292 and 21132210012301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6003466994 + ... + 6003470513.

It is an arithmetic number, because the mean of its divisors is an integer number (1134655594506).

Almost surely, 2^{21132210012320} is an apocalyptic number.

21132210012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132210012320 is an abundant number, since it is smaller than the sum of its proper divisors (33331258523968).

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

21132210012320 is a wasteful number, since it uses less digits than its factorization.

21132210012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12006937533 (or 12006937525 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21132210012320 its reverse (2321001223112), we get a palindrome (23453211235432).

The spelling of 21132210012320 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred ten million, twelve thousand, three hundred twenty".