11120120100 has 144 divisors (see below), whose sum is σ = 36510163200. Its totient is φ = 2902239360.

The previous prime is 11120120083. The next prime is 11120120107. The reversal of 11120120100 is 102102111.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (11120120107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83086 + ... + 170714.

It is an arithmetic number, because the mean of its divisors is an integer number (253542800).

Almost surely, 2^11120120100 is an apocalyptic number.

11120120100 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 11120120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18255081600).

11120120100 is an abundant number, since it is smaller than the sum of its proper divisors (25390043100).

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

11120120100 is a wasteful number, since it uses less digits than its factorization.

11120120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87699 (or 87686 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11120120100 its reverse (102102111), we get a palindrome (11222222211).

The spelling of 11120120100 in words is "eleven billion, one hundred twenty million, one hundred twenty thousand, one hundred".