100111111011100 has 144 divisors (see below), whose sum is σ = 248896082631168. Its totient is φ = 34238092181760.

The previous prime is 100111111011083. The next prime is 100111111011169. The reversal of 100111111011100 is 1110111111001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (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, 699551154 + ... + 699694246.

It is an arithmetic number, because the mean of its divisors is an integer number (1728445018272).

Almost surely, 2^{100111111011100} is an apocalyptic number.

100111111011100 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 100111111011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124448041315584).

100111111011100 is an abundant number, since it is smaller than the sum of its proper divisors (148784971620068).

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

100111111011100 is a wasteful number, since it uses less digits than its factorization.

100111111011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145604 (or 145597 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 100111111011100 its reverse (1110111111001), we get a palindrome (101221222122101).

Subtracting from 100111111011100 its reverse (1110111111001), we obtain a palindrome (99000999900099).

The spelling of 100111111011100 in words is "one hundred trillion, one hundred eleven billion, one hundred eleven million, eleven thousand, one hundred".