11121221110120 has 64 divisors (see below), whose sum is σ = 27333603705600. Its totient is φ = 4038738036480.

The previous prime is 11121221110073. The next prime is 11121221110133. The reversal of 11121221110120 is 2101112212111.

It is a junction number, because it is equal to n+sod(n) for n = 11121221110094 and 11121221110103.

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, 16361440 + ... + 17027599.

It is an arithmetic number, because the mean of its divisors is an integer number (427087557900).

Almost surely, 2^{11121221110120} is an apocalyptic number.

11121221110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121221110120 is an abundant number, since it is smaller than the sum of its proper divisors (16212382595480).

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

11121221110120 is a wasteful number, since it uses less digits than its factorization.

11121221110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33389818 (or 33389814 counting only the distinct ones).

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

Adding to 11121221110120 its reverse (2101112212111), we get a palindrome (13222333322231).

The spelling of 11121221110120 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty".