11111101104 has 80 divisors (see below), whose sum is σ = 29332622592. Its totient is φ = 3623418624.

The previous prime is 11111101103. The next prime is 11111101109. The reversal of 11111101104 is 40110111111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 11111101104.

It is not an unprimeable number, because it can be changed into a prime (11111101103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396814 + ... + 423890.

Almost surely, 2^11111101104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111101104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14666311296).

11111101104 is an abundant number, since it is smaller than the sum of its proper divisors (18221521488).

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

11111101104 is a wasteful number, since it uses less digits than its factorization.

11111101104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27274 (or 27268 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111101104 its reverse (40110111111), we get a palindrome (51221212215).

The spelling of 11111101104 in words is "eleven billion, one hundred eleven million, one hundred one thousand, one hundred four".