111222112101100 has 432 divisors, whose sum is σ = 327558832892928. Its totient is φ = 31896976320000.

The previous prime is 111222112101047. The next prime is 111222112101103. The reversal of 111222112101100 is 1101211222111.

It is not an unprimeable number, because it can be changed into a prime (111222112101103) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 342279705 + ... + 342604495.

It is an arithmetic number, because the mean of its divisors is an integer number (758238039104).

Almost surely, 2^{111222112101100} is an apocalyptic number.

111222112101100 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 111222112101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163779416446464).

111222112101100 is an abundant number, since it is smaller than the sum of its proper divisors (216336720791828).

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

111222112101100 is a wasteful number, since it uses less digits than its factorization.

111222112101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325158 (or 325140 counting only the distinct ones).

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

Adding to 111222112101100 its reverse (1101211222111), we get a palindrome (112323323323211).

The spelling of 111222112101100 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twelve million, one hundred one thousand, one hundred".