11113201221020 has 12 divisors (see below), whose sum is σ = 23337722564184. Its totient is φ = 4445280488400.

The previous prime is 11113201221007. The next prime is 11113201221049. The reversal of 11113201221020 is 2012210231111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11113201221020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277830030506 + ... + 277830030545.

It is an arithmetic number, because the mean of its divisors is an integer number (1944810213682).

Almost surely, 2^{11113201221020} is an apocalyptic number.

11113201221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11113201221020 is an abundant number, since it is smaller than the sum of its proper divisors (12224521343164).

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

11113201221020 is a wasteful number, since it uses less digits than its factorization.

11113201221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555660061060 (or 555660061058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11113201221020 its reverse (2012210231111), we get a palindrome (13125411452131).

The spelling of 11113201221020 in words is "eleven trillion, one hundred thirteen billion, two hundred one million, two hundred twenty-one thousand, twenty".