11112113213 has 4 divisors (see below), whose sum is σ = 11112386208. Its totient is φ = 11111840220.

The previous prime is 11112113183. The next prime is 11112113231. The reversal of 11112113213 is 31231121111.

11112113213 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 11112113213 - 2¹⁰ = 11112112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112113191 and 11112113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112110213) 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, 61823 + ... + 161388.

It is an arithmetic number, because the mean of its divisors is an integer number (2778096552).

Almost surely, 2^11112113213 is an apocalyptic number.

It is an amenable number.

11112113213 is a deficient number, since it is larger than the sum of its proper divisors (272995).

11112113213 is an equidigital number, since it uses as much as digits as its factorization.

11112113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272994.

The product of its digits is 36, while the sum is 17.

Adding to 11112113213 its reverse (31231121111), we get a palindrome (42343234324).

The spelling of 11112113213 in words is "eleven billion, one hundred twelve million, one hundred thirteen thousand, two hundred thirteen".