11221220113 has 4 divisors (see below), whose sum is σ = 11224770928. Its totient is φ = 11217669300.

The previous prime is 11221220053. The next prime is 11221220147. The reversal of 11221220113 is 31102212211.

11221220113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11221220113 - 2³³ = 2631285521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221221113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770663 + ... + 1776988.

It is an arithmetic number, because the mean of its divisors is an integer number (2806192732).

Almost surely, 2^11221220113 is an apocalyptic number.

It is an amenable number.

11221220113 is a deficient number, since it is larger than the sum of its proper divisors (3550815).

11221220113 is an equidigital number, since it uses as much as digits as its factorization.

11221220113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550814.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11221220113 its reverse (31102212211), we get a palindrome (42323432324).

The spelling of 11221220113 in words is "eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirteen".