11112211103 has 4 divisors (see below), whose sum is σ = 12699669840. Its totient is φ = 9524752368.

The previous prime is 11112211093. The next prime is 11112211127. The reversal of 11112211103 is 30111221111.

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

It is a cyclic number.

It is not a de Polignac number, because 11112211103 - 2²⁰ = 11111162527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112211003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793729358 + ... + 793729371.

It is an arithmetic number, because the mean of its divisors is an integer number (3174917460).

Almost surely, 2^11112211103 is an apocalyptic number.

11112211103 is a deficient number, since it is larger than the sum of its proper divisors (1587458737).

11112211103 is an equidigital number, since it uses as much as digits as its factorization.

11112211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587458736.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11112211103 its reverse (30111221111), we get a palindrome (41223432214).

The spelling of 11112211103 in words is "eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred three".