11100112111220 has 96 divisors (see below), whose sum is σ = 26253623079936. Its totient is φ = 3905606476800.

The previous prime is 11100112111177. The next prime is 11100112111223. The reversal of 11100112111220 is 2211121100111.

It is a junction number, because it is equal to n+sod(n) for n = 11100112111195 and 11100112111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100112111223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46208462 + ... + 46448058.

It is an arithmetic number, because the mean of its divisors is an integer number (273475240416).

Almost surely, 2^{11100112111220} is an apocalyptic number.

11100112111220 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 11100112111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13126811539968).

11100112111220 is an abundant number, since it is smaller than the sum of its proper divisors (15153510968716).

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

11100112111220 is a wasteful number, since it uses less digits than its factorization.

11100112111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246441 (or 246439 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11100112111220 its reverse (2211121100111), we get a palindrome (13311233211331).

It can be divided in two parts, 111001 and 12111220, that added together give a palindrome (12222221).

The spelling of 11100112111220 in words is "eleven trillion, one hundred billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty".