21132133320 has 64 divisors (see below), whose sum is σ = 65441456640. Its totient is φ = 5453452800.

The previous prime is 21132133301. The next prime is 21132133327. The reversal of 21132133320 is 2333123112.

It is not an unprimeable number, because it can be changed into a prime (21132133327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2836621 + ... + 2844060.

It is an arithmetic number, because the mean of its divisors is an integer number (1022522760).

Almost surely, 2^21132133320 is an apocalyptic number.

21132133320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132133320 is an abundant number, since it is smaller than the sum of its proper divisors (44309323320).

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

21132133320 is a wasteful number, since it uses less digits than its factorization.

21132133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680726 (or 5680722 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21132133320 its reverse (2333123112), we get a palindrome (23465256432).

The spelling of 21132133320 in words is "twenty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, three hundred twenty".