220222221100 has 144 divisors (see below), whose sum is σ = 578882324160. Its totient is φ = 70989004800.

The previous prime is 220222221053. The next prime is 220222221133. The reversal of 220222221100 is 1122222022.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 11997930 + ... + 12016270.

It is an arithmetic number, because the mean of its divisors is an integer number (4020016140).

Almost surely, 2^220222221100 is an apocalyptic number.

220222221100 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 220222221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289441162080).

220222221100 is an abundant number, since it is smaller than the sum of its proper divisors (358660103060).

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

220222221100 is a wasteful number, since it uses less digits than its factorization.

220222221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388 (or 19381 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220222221100 its reverse (1122222022), we get a palindrome (221344443122).

The spelling of 220222221100 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred".