11121121103 has 4 divisors (see below), whose sum is σ = 11121584880. Its totient is φ = 11120657328.

The previous prime is 11121121091. The next prime is 11121121181. The reversal of 11121121103 is 30112112111.

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 11121121103 - 2⁴ = 11121121087 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 (11121121603) 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, 193838 + ... + 244571.

It is an arithmetic number, because the mean of its divisors is an integer number (2780396220).

Almost surely, 2^11121121103 is an apocalyptic number.

11121121103 is a deficient number, since it is larger than the sum of its proper divisors (463777).

11121121103 is an equidigital number, since it uses as much as digits as its factorization.

11121121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463776.

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

Adding to 11121121103 its reverse (30112112111), we get a palindrome (41233233214).

The spelling of 11121121103 in words is "eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred three".