20332221100 has 144 divisors (see below), whose sum is σ = 48735769600. Its totient is φ = 7332768000.

The previous prime is 20332221067. The next prime is 20332221181. The reversal of 20332221100 is 112223302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3590071 + ... + 3595729.

Almost surely, 2^20332221100 is an apocalyptic number.

20332221100 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 20332221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24367884800).

20332221100 is an abundant number, since it is smaller than the sum of its proper divisors (28403548500).

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

20332221100 is a wasteful number, since it uses less digits than its factorization.

20332221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 5777 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20332221100 its reverse (112223302), we get a palindrome (20444444402).

It can be divided in two parts, 203322 and 21100, that added together give a palindrome (224422).

The spelling of 20332221100 in words is "twenty billion, three hundred thirty-two million, two hundred twenty-one thousand, one hundred".