11121105500 has 24 divisors (see below), whose sum is σ = 24288495504. Its totient is φ = 4448442000.

The previous prime is 11121105497. The next prime is 11121105529. The reversal of 11121105500 is 550112111.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11120606 + ... + 11121605.

It is an arithmetic number, because the mean of its divisors is an integer number (1012020646).

Almost surely, 2^11121105500 is an apocalyptic number.

11121105500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121105500 is an abundant number, since it is smaller than the sum of its proper divisors (13167390004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121105500 is a wasteful number, since it uses less digits than its factorization.

11121105500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22242230 (or 22242218 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 11121105500 its reverse (550112111), we get a palindrome (11671217611).

The spelling of 11121105500 in words is "eleven billion, one hundred twenty-one million, one hundred five thousand, five hundred".