1111000100100 has 144 divisors (see below), whose sum is σ = 3526096357056. Its totient is φ = 267845184000.

The previous prime is 1111000100087. The next prime is 1111000100227. The reversal of 1111000100100 is 10010001111.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 332719 + ... + 1527318.

Almost surely, 2^{1111000100100} is an apocalyptic number.

1111000100100 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 1111000100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763048178528).

1111000100100 is an abundant number, since it is smaller than the sum of its proper divisors (2415096256956).

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

1111000100100 is a wasteful number, since it uses less digits than its factorization.

1111000100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860246 (or 1860239 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 6.

Adding to 1111000100100 its reverse (10010001111), we get a palindrome (1121010101211).

The spelling of 1111000100100 in words is "one trillion, one hundred eleven billion, one hundred thousand, one hundred".