111000012100 has 72 divisors (see below), whose sum is σ = 253686957440. Its totient is φ = 42040010880.

The previous prime is 111000012073. The next prime is 111000012107. The reversal of 111000012100 is 1210000111.

It is not an unprimeable number, because it can be changed into a prime (111000012107) by changing a digit.

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, 3657589 + ... + 3687811.

Almost surely, 2^111000012100 is an apocalyptic number.

111000012100 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 111000012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126843478720).

111000012100 is an abundant number, since it is smaller than the sum of its proper divisors (142686945340).

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

111000012100 is a wasteful number, since it uses less digits than its factorization.

111000012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32189 (or 32182 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 111000012100 its reverse (1210000111), we get a palindrome (112210012211).

The spelling of 111000012100 in words is "one hundred eleven billion, twelve thousand, one hundred".