11121020110111 has 4 divisors (see below), whose sum is σ = 11121151016800. Its totient is φ = 11120889203424.

The previous prime is 11121020110099. The next prime is 11121020110241. The reversal of 11121020110111 is 11101102012111.

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 11121020110111 - 2⁹ = 11121020109599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121020110091 and 11121020110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121020110411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65325831 + ... + 65495848.

It is an arithmetic number, because the mean of its divisors is an integer number (2780287754200).

Almost surely, 2^{11121020110111} is an apocalyptic number.

11121020110111 is a deficient number, since it is larger than the sum of its proper divisors (130906689).

11121020110111 is an equidigital number, since it uses as much as digits as its factorization.

11121020110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130906688.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11121020110111 its reverse (11101102012111), we get a palindrome (22222122122222).

The spelling of 11121020110111 in words is "eleven trillion, one hundred twenty-one billion, twenty million, one hundred ten thousand, one hundred eleven".