11020111320 has 128 divisors (see below), whose sum is σ = 33554995200. Its totient is φ = 2894900736.

The previous prime is 11020111303. The next prime is 11020111363. The reversal of 11020111320 is 2311102011.

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

It is a junction number, because it is equal to n+sod(n) for n = 11020111296 and 11020111305.

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, 5279317 + ... + 5281403.

It is an arithmetic number, because the mean of its divisors is an integer number (262148400).

Almost surely, 2^11020111320 is an apocalyptic number.

11020111320 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 11020111320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16777497600).

11020111320 is an abundant number, since it is smaller than the sum of its proper divisors (22534883880).

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

11020111320 is a wasteful number, since it uses less digits than its factorization.

11020111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2733 counting only the distinct ones).

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

Adding to 11020111320 its reverse (2311102011), we get a palindrome (13331213331).

The spelling of 11020111320 in words is "eleven billion, twenty million, one hundred eleven thousand, three hundred twenty".