21132023200220 has 96 divisors (see below), whose sum is σ = 48444200884800. Its totient is φ = 7712506368000.

The previous prime is 21132023200207. The next prime is 21132023200231. The reversal of 21132023200220 is 2200232023112.

It is a happy number.

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 = 21132023200192 and 21132023200201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2027990 + ... + 6810050.

It is an arithmetic number, because the mean of its divisors is an integer number (504627092550).

Almost surely, 2^{21132023200220} is an apocalyptic number.

21132023200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21132023200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24222100442400).

21132023200220 is an abundant number, since it is smaller than the sum of its proper divisors (27312177684580).

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

21132023200220 is a wasteful number, since it uses less digits than its factorization.

21132023200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782519 (or 4782517 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21132023200220 its reverse (2200232023112), we get a palindrome (23332255223332).

The spelling of 21132023200220 in words is "twenty-one trillion, one hundred thirty-two billion, twenty-three million, two hundred thousand, two hundred twenty".