11101100120 has 32 divisors (see below), whose sum is σ = 27248155920. Its totient is φ = 4036763520.

The previous prime is 11101100119. The next prime is 11101100123. The reversal of 11101100120 is 2100110111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 11101100098 and 11101100107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101100123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12614447 + ... + 12615326.

Almost surely, 2^11101100120 is an apocalyptic number.

11101100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101100120 is an abundant number, since it is smaller than the sum of its proper divisors (16147055800).

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

11101100120 is a wasteful number, since it uses less digits than its factorization.

11101100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25229795 (or 25229791 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11101100120 its reverse (2100110111), we get a palindrome (13201210231).

Subtracting from 11101100120 its reverse (2100110111), we obtain a palindrome (9000990009).

The spelling of 11101100120 in words is "eleven billion, one hundred one million, one hundred thousand, one hundred twenty".