11220302220 has 96 divisors (see below), whose sum is σ = 31652764416. Its totient is φ = 2969683200.

The previous prime is 11220302189. The next prime is 11220302227. The reversal of 11220302220 is 2220302211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11220302220.

It is not an unprimeable number, because it can be changed into a prime (11220302227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10283875 + ... + 10284965.

It is an arithmetic number, because the mean of its divisors is an integer number (329716296).

Almost surely, 2^11220302220 is an apocalyptic number.

11220302220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220302220 is an abundant number, since it is smaller than the sum of its proper divisors (20432462196).

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

11220302220 is a wasteful number, since it uses less digits than its factorization.

11220302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 11220302220 its reverse (2220302211), we get a palindrome (13440604431).

Subtracting from 11220302220 its reverse (2220302211), we obtain a palindrome (9000000009).

It can be divided in two parts, 1122030 and 2220, that added together give a triangular number (1124250 = T₁₄₉₉).

The spelling of 11220302220 in words is "eleven billion, two hundred twenty million, three hundred two thousand, two hundred twenty".