11222111222120 has 64 divisors (see below), whose sum is σ = 25269418281600. Its totient is φ = 4485348898560.

The previous prime is 11222111222089. The next prime is 11222111222159. The reversal of 11222111222120 is 2122211122211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11222111222092 and 11222111222101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595675661 + ... + 595694499.

It is an arithmetic number, because the mean of its divisors is an integer number (394834660650).

Almost surely, 2^{11222111222120} is an apocalyptic number.

11222111222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222111222120 is an abundant number, since it is smaller than the sum of its proper divisors (14047307059480).

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

11222111222120 is a wasteful number, since it uses less digits than its factorization.

11222111222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29658 (or 29654 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11222111222120 its reverse (2122211122211), we get a palindrome (13344322344331).

Subtracting from 11222111222120 its reverse (2122211122211), we obtain a palindrome (9099900099909).

The spelling of 11222111222120 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty".