11221112113 has 4 divisors (see below), whose sum is σ = 11221370980. Its totient is φ = 11220853248.

The previous prime is 11221112087. The next prime is 11221112197. The reversal of 11221112113 is 31121112211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 802418929 + 10418693184 = 28327^2 + 102072^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221112113 - 2²⁹ = 10684241201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221112213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46848 + ... + 156961.

It is an arithmetic number, because the mean of its divisors is an integer number (2805342745).

Almost surely, 2^11221112113 is an apocalyptic number.

It is an amenable number.

11221112113 is a deficient number, since it is larger than the sum of its proper divisors (258867).

11221112113 is an equidigital number, since it uses as much as digits as its factorization.

11221112113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258866.

The product of its digits is 24, while the sum is 16.

Adding to 11221112113 its reverse (31121112211), we get a palindrome (42342224324).

The spelling of 11221112113 in words is "eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred thirteen".