21132303020 has 48 divisors (see below), whose sum is σ = 44609298048. Its totient is φ = 8408924160.

The previous prime is 21132302957. The next prime is 21132303089. The reversal of 21132303020 is 2030323112.

It is a super-2 number, since 2×21132303020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21132303020.

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 15 ways as a sum of consecutive naturals, for example, 4680284 + ... + 4684796.

It is an arithmetic number, because the mean of its divisors is an integer number (929360376).

Almost surely, 2^21132303020 is an apocalyptic number.

21132303020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132303020 is an abundant number, since it is smaller than the sum of its proper divisors (23476995028).

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

21132303020 is a wasteful number, since it uses less digits than its factorization.

21132303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21132303020 its reverse (2030323112), we get a palindrome (23162626132).

The spelling of 21132303020 in words is "twenty-one billion, one hundred thirty-two million, three hundred three thousand, twenty".