111422221100 has 72 divisors (see below), whose sum is σ = 256570922160. Its totient is φ = 41855109120.

The previous prime is 111422221093. The next prime is 111422221123. The reversal of 111422221100 is 1122224111.

It is a super-2 number, since 2×111422221100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 23 ways as a sum of consecutive naturals, for example, 705191 + ... + 848609.

It is an arithmetic number, because the mean of its divisors is an integer number (3563485030).

Almost surely, 2^111422221100 is an apocalyptic number.

111422221100 is a gapful number since it is divisible by the number (10) 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 111422221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128285461080).

111422221100 is an abundant number, since it is smaller than the sum of its proper divisors (145148701060).

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

111422221100 is a wasteful number, since it uses less digits than its factorization.

111422221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143907 (or 143900 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111422221100 its reverse (1122224111), we get a palindrome (112544445211).

The spelling of 111422221100 in words is "one hundred eleven billion, four hundred twenty-two million, two hundred twenty-one thousand, one hundred".