11102220 has 72 divisors (see below), whose sum is σ = 34607664. Its totient is φ = 2878848.

The previous prime is 11102219. The next prime is 11102227. The reversal of 11102220 is 2220111.

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 (11102227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5827 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (480662).

Almost surely, 2^11102220 is an apocalyptic number.

11102220 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 11102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17303832).

11102220 is an abundant number, since it is smaller than the sum of its proper divisors (23505444).

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

11102220 is a wasteful number, since it uses less digits than its factorization.

11102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11102220 is about 3331.9993997598. Note that the first 3 decimals coincide. The cubic root of 11102220 is about 223.0847807836.

Adding to 11102220 its reverse (2220111), we get a palindrome (13322331).

The spelling of 11102220 in words is "eleven million, one hundred two thousand, two hundred twenty".