11222221120 has 56 divisors (see below), whose sum is σ = 29152279008. Its totient is φ = 4080806400.

The previous prime is 11222221103. The next prime is 11222221133. The reversal of 11222221120 is 2112222211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 11222221094 and 11222221103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590546 + ... + 1597585.

Almost surely, 2^11222221120 is an apocalyptic number.

11222221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222221120 is an abundant number, since it is smaller than the sum of its proper divisors (17930057888).

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

11222221120 is a wasteful number, since it uses less digits than its factorization.

11222221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188159 (or 3188149 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222221120 its reverse (2112222211), we get a palindrome (13334443331).

The spelling of 11222221120 in words is "eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty".