110011100121 has 24 divisors (see below), whose sum is σ = 171388176960. Its totient is φ = 67596361056.

The previous prime is 110011100117. The next prime is 110011100183. The reversal of 110011100121 is 121001110011.

It is not a de Polignac number, because 110011100121 - 2² = 110011100117 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 (110011100191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 636301 + ... + 790506.

It is an arithmetic number, because the mean of its divisors is an integer number (7141174040).

Almost surely, 2^110011100121 is an apocalyptic number.

It is an amenable number.

110011100121 is a deficient number, since it is larger than the sum of its proper divisors (61377076839).

110011100121 is a wasteful number, since it uses less digits than its factorization.

110011100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427485 (or 1427482 counting only the distinct ones).

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

Adding to 110011100121 its reverse (121001110011), we get a palindrome (231012210132).

The spelling of 110011100121 in words is "one hundred ten billion, eleven million, one hundred thousand, one hundred twenty-one".