11112020111 has 4 divisors (see below), whose sum is σ = 11196844824. Its totient is φ = 11027195400.

The previous prime is 11112020089. The next prime is 11112020113. The reversal of 11112020111 is 11102021111.

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 11112020111 - 2²⁶ = 11044911247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112020092 and 11112020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112020113) 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, 42412160 + ... + 42412421.

It is an arithmetic number, because the mean of its divisors is an integer number (2799211206).

Almost surely, 2^11112020111 is an apocalyptic number.

11112020111 is a deficient number, since it is larger than the sum of its proper divisors (84824713).

11112020111 is an equidigital number, since it uses as much as digits as its factorization.

11112020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84824712.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112020111 its reverse (11102021111), we get a palindrome (22214041222).

The spelling of 11112020111 in words is "eleven billion, one hundred twelve million, twenty thousand, one hundred eleven".