11111121103 has 8 divisors (see below), whose sum is σ = 12170396880. Its totient is φ = 10096920960.

The previous prime is 11111121041. The next prime is 11111121121. The reversal of 11111121103 is 30112111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111121103 - 2⁹ = 11111120591 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 (11111121173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11268393 + ... + 11269378.

It is an arithmetic number, because the mean of its divisors is an integer number (1521299610).

Almost surely, 2^11111121103 is an apocalyptic number.

11111121103 is a deficient number, since it is larger than the sum of its proper divisors (1059275777).

11111121103 is a wasteful number, since it uses less digits than its factorization.

11111121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22537817.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 11111121103 its reverse (30112111111), we get a palindrome (41223232214).

The spelling of 11111121103 in words is "eleven billion, one hundred eleven million, one hundred twenty-one thousand, one hundred three".