22222111100 has 144 divisors (see below), whose sum is σ = 56238067200. Its totient is φ = 7464441600.

The previous prime is 22222111081. The next prime is 22222111133. The reversal of 22222111100 is 111122222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

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, 9331910 + ... + 9334290.

Almost surely, 2^22222111100 is an apocalyptic number.

22222111100 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 22222111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28119033600).

22222111100 is an abundant number, since it is smaller than the sum of its proper divisors (34015956100).

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

22222111100 is a wasteful number, since it uses less digits than its factorization.

22222111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22222111100 its reverse (111122222), we get a palindrome (22333233322).

The spelling of 22222111100 in words is "twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred".