11220561222220 has 48 divisors (see below), whose sum is σ = 26930327135040. Its totient is φ = 3846909533184.

The previous prime is 11220561222217. The next prime is 11220561222223. The reversal of 11220561222220 is 2222216502211.

It is an interprime number because it is at equal distance from previous prime (11220561222217) and next prime (11220561222223).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (11220561222223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2438416 + ... + 5327944.

It is an arithmetic number, because the mean of its divisors is an integer number (561048481980).

Almost surely, 2^{11220561222220} is an apocalyptic number.

11220561222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220561222220 is an abundant number, since it is smaller than the sum of its proper divisors (15709765912820).

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

11220561222220 is a wasteful number, since it uses less digits than its factorization.

11220561222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917282 (or 2917280 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 11220561222220 its reverse (2222216502211), we get a palindrome (13442777724431).

The spelling of 11220561222220 in words is "eleven trillion, two hundred twenty billion, five hundred sixty-one million, two hundred twenty-two thousand, two hundred twenty".