111112101211111 has 24 divisors (see below), whose sum is σ = 150315671583392. Its totient is φ = 79920792072000.

The previous prime is 111112101211099. The next prime is 111112101211171.

111112101211111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111112101211111 - 2¹¹ = 111112101209063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112101211171) 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, 5045493540 + ... + 5045515561.

Almost surely, 2^{111112101211111} is an apocalyptic number.

111112101211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111112101211111 is a deficient number, since it is larger than the sum of its proper divisors (39203570372281).

111112101211111 is a wasteful number, since it uses less digits than its factorization.

111112101211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091009143 (or 10091009132 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 16.

It can be divided in two parts, 11111210 and 1211111, that added together give a palindrome (12322321).

The spelling of 111112101211111 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred one million, two hundred eleven thousand, one hundred eleven".