11122221120 has 56 divisors (see below), whose sum is σ = 35313055104. Its totient is φ = 2965925376.

The previous prime is 11122221109. The next prime is 11122221133. The reversal of 11122221120 is 2112222111.

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 11122221120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5791864 + ... + 5793783.

Almost surely, 2^11122221120 is an apocalyptic number.

11122221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122221120 is an abundant number, since it is smaller than the sum of its proper divisors (24190833984).

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

11122221120 is a wasteful number, since it uses less digits than its factorization.

11122221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585667 (or 11585657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11122221120 its reverse (2112222111), we get a palindrome (13234443231).

Subtracting from 11122221120 its reverse (2112222111), we obtain a palindrome (9009999009).

The spelling of 11122221120 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty".