11122205556 has 96 divisors (see below), whose sum is σ = 32838607872. Its totient is φ = 2845751040.

The previous prime is 11122205551. The next prime is 11122205597. The reversal of 11122205556 is 65550222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122205551) 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, 27921 + ... + 151736.

It is an arithmetic number, because the mean of its divisors is an integer number (342068832).

Almost surely, 2^11122205556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11122205556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16419303936).

11122205556 is an abundant number, since it is smaller than the sum of its proper divisors (21716402316).

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

11122205556 is a wasteful number, since it uses less digits than its factorization.

11122205556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179749 (or 179747 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 11122205556 its reverse (65550222111), we get a palindrome (76672427667).

It can be divided in two parts, 111222055 and 56, that added together give a palindrome (111222111).

The spelling of 11122205556 in words is "eleven billion, one hundred twenty-two million, two hundred five thousand, five hundred fifty-six".