11112012111 has 4 divisors (see below), whose sum is σ = 14816016152. Its totient is φ = 7408008072.

The previous prime is 11112012101. The next prime is 11112012127. The reversal of 11112012111 is 11121021111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11112012111 - 2¹³ = 11112003919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112012101) 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, 1852002016 + ... + 1852002021.

It is an arithmetic number, because the mean of its divisors is an integer number (3704004038).

Almost surely, 2^11112012111 is an apocalyptic number.

11112012111 is a deficient number, since it is larger than the sum of its proper divisors (3704004041).

11112012111 is an equidigital number, since it uses as much as digits as its factorization.

11112012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704004040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11112012111 its reverse (11121021111), we get a palindrome (22233033222).

The spelling of 11112012111 in words is "eleven billion, one hundred twelve million, twelve thousand, one hundred eleven".