11102011220 has 96 divisors (see below), whose sum is σ = 25991884800. Its totient is φ = 3963890304.

The previous prime is 11102011213. The next prime is 11102011247. The reversal of 11102011220 is 2211020111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 576101 + ... + 595059.

It is an arithmetic number, because the mean of its divisors is an integer number (270748800).

Almost surely, 2^11102011220 is an apocalyptic number.

11102011220 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 11102011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12995942400).

11102011220 is an abundant number, since it is smaller than the sum of its proper divisors (14889873580).

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

11102011220 is a wasteful number, since it uses less digits than its factorization.

11102011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19077 (or 19075 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11102011220 its reverse (2211020111), we get a palindrome (13313031331).

The spelling of 11102011220 in words is "eleven billion, one hundred two million, eleven thousand, two hundred twenty".