11103212113 has 4 divisors (see below), whose sum is σ = 12689385280. Its totient is φ = 9517038948.

The previous prime is 11103212111. The next prime is 11103212149. The reversal of 11103212113 is 31121230111.

It is a happy number.

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 11103212113 - 2¹ = 11103212111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103212111) 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, 793086573 + ... + 793086586.

It is an arithmetic number, because the mean of its divisors is an integer number (3172346320).

Almost surely, 2^11103212113 is an apocalyptic number.

It is an amenable number.

11103212113 is a deficient number, since it is larger than the sum of its proper divisors (1586173167).

11103212113 is an equidigital number, since it uses as much as digits as its factorization.

11103212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586173166.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11103212113 its reverse (31121230111), we get a palindrome (42224442224).

The spelling of 11103212113 in words is "eleven billion, one hundred three million, two hundred twelve thousand, one hundred thirteen".