11020 has 24 divisors (see below), whose sum is σ = 25200. Its totient is φ = 4032.

The previous prime is 11003. The next prime is 11027. The reversal of 11020 is 2011.

It is a Harshad number since it is a multiple of its sum of digits (4).

11020 is an undulating number in base 12.

It is not an unprimeable number, because it can be changed into a prime (11027) 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, 366 + ... + 394.

It is an arithmetic number, because the mean of its divisors is an integer number (1050).

2¹¹⁰²⁰ is an apocalyptic number.

11020 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 11020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12600).

11020 is an abundant number, since it is smaller than the sum of its proper divisors (14180).

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

11020 is a wasteful number, since it uses less digits than its factorization.

11020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 11020 is about 104.9761877761. The cubic root of 11020 is about 22.2532714123.

Adding to 11020 its reverse (2011), we get a palindrome (13031).

Subtracting from 11020 its reverse (2011), we obtain a palindrome (9009).

The spelling of 11020 in words is "eleven thousand, twenty", and thus it is an iban number.