11011002220 has 48 divisors (see below), whose sum is σ = 23890261248. Its totient is φ = 4258529280.

The previous prime is 11011002209. The next prime is 11011002253. The reversal of 11011002220 is 2220011011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11011002197 and 11011002206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747244 + ... + 761836.

It is an arithmetic number, because the mean of its divisors is an integer number (497713776).

Almost surely, 2^11011002220 is an apocalyptic number.

11011002220 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 11011002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11945130624).

11011002220 is an abundant number, since it is smaller than the sum of its proper divisors (12879259028).

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

11011002220 is a wasteful number, since it uses less digits than its factorization.

11011002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15850 (or 15848 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11011002220 its reverse (2220011011), we get a palindrome (13231013231).

The spelling of 11011002220 in words is "eleven billion, eleven million, two thousand, two hundred twenty".