100001111111100 has 216 divisors, whose sum is σ = 315518494898880. Its totient is φ = 26490886755840.

The previous prime is 100001111111021. The next prime is 100001111111129. The reversal of 100001111111100 is 1111111100001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 617823981 + ... + 617985819.

It is an arithmetic number, because the mean of its divisors is an integer number (1460733772680).

Almost surely, 2^{100001111111100} is an apocalyptic number.

100001111111100 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 100001111111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157759247449440).

100001111111100 is an abundant number, since it is smaller than the sum of its proper divisors (215517383787780).

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

100001111111100 is a wasteful number, since it uses less digits than its factorization.

100001111111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166389 (or 166379 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 100001111111100 its reverse (1111111100001), we get a palindrome (101112222211101).

The spelling of 100001111111100 in words is "one hundred trillion, one billion, one hundred eleven million, one hundred eleven thousand, one hundred".