100001111200 has 144 divisors (see below), whose sum is σ = 255194041536. Its totient is φ = 38193408000.

The previous prime is 100001111141. The next prime is 100001111257. The reversal of 100001111200 is 2111100001.

It is an unprimeable number.

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, 11053879 + ... + 11062921.

It is an arithmetic number, because the mean of its divisors is an integer number (1772180844).

Almost surely, 2^100001111200 is an apocalyptic number.

100001111200 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 100001111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127597020768).

100001111200 is an abundant number, since it is smaller than the sum of its proper divisors (155192930336).

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

100001111200 is a wasteful number, since it uses less digits than its factorization.

100001111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9687 (or 9674 counting only the distinct ones).

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

Adding to 100001111200 its reverse (2111100001), we get a palindrome (102112211201).

The spelling of 100001111200 in words is "one hundred billion, one million, one hundred eleven thousand, two hundred".