121100110011 has 12 divisors (see below), whose sum is σ = 185211933192. Its totient is φ = 75984382656.

The previous prime is 121100110009. The next prime is 121100110037. The reversal of 121100110011 is 110011001121.

It is not a de Polignac number, because 121100110011 - 2¹ = 121100110009 is a prime.

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

121100110011 is a modest number, since divided by 110011 gives 1211 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 121100109975 and 121100110002.

It is not an unprimeable number, because it can be changed into a prime (121100110211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395751841 + ... + 395752146.

It is an arithmetic number, because the mean of its divisors is an integer number (15434327766).

Almost surely, 2^121100110011 is an apocalyptic number.

121100110011 is a deficient number, since it is larger than the sum of its proper divisors (64111823181).

121100110011 is a wasteful number, since it uses less digits than its factorization.

121100110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791504010 (or 791504007 counting only the distinct ones).

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

Adding to 121100110011 its reverse (110011001121), we get a palindrome (231111111132).

The spelling of 121100110011 in words is "one hundred twenty-one billion, one hundred million, one hundred ten thousand, eleven".