11123220120 has 32 divisors (see below), whose sum is σ = 33369660720. Its totient is φ = 2966192000.

The previous prime is 11123220029. The next prime is 11123220133. The reversal of 11123220120 is 2102232111.

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 11123220120.

It is a congruent number.

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, 46346631 + ... + 46346870.

Almost surely, 2^11123220120 is an apocalyptic number.

11123220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123220120 is an abundant number, since it is smaller than the sum of its proper divisors (22246440600).

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

11123220120 is a wasteful number, since it uses less digits than its factorization.

11123220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92693515 (or 92693511 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11123220120 its reverse (2102232111), we get a palindrome (13225452231).

The spelling of 11123220120 in words is "eleven billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty".