11100011121 has 32 divisors (see below), whose sum is σ = 16532208000. Its totient is φ = 7360628544.

The previous prime is 11100011101. The next prime is 11100011149. The reversal of 11100011121 is 12111000111.

It is not a de Polignac number, because 11100011121 - 2⁵ = 11100011089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11100011101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5607910 + ... + 5609888.

It is an arithmetic number, because the mean of its divisors is an integer number (516631500).

Almost surely, 2^11100011121 is an apocalyptic number.

It is an amenable number.

11100011121 is a deficient number, since it is larger than the sum of its proper divisors (5432196879).

11100011121 is a wasteful number, since it uses less digits than its factorization.

11100011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11100011121 its reverse (12111000111), we get a palindrome (23211011232).

The spelling of 11100011121 in words is "eleven billion, one hundred million, eleven thousand, one hundred twenty-one".