111222111100 has 18 divisors (see below), whose sum is σ = 241351981304. Its totient is φ = 44488844400.

The previous prime is 111222111083. The next prime is 111222111107. The reversal of 111222111100 is 1111222111.

It is a happy number.

111222111100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222111107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556110456 + ... + 556110655.

Almost surely, 2^111222111100 is an apocalyptic number.

111222111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222111100 is an abundant number, since it is smaller than the sum of its proper divisors (130129870204).

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

111222111100 is a wasteful number, since it uses less digits than its factorization.

111222111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112221125 (or 1112221118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111222111100 its reverse (1111222111), we get a palindrome (112333333211).

The spelling of 111222111100 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, one hundred".