111111201011111 has 96 divisors (see below), whose sum is σ = 135522616320000. Its totient is φ = 90724393267200.

The previous prime is 111111201011099. The next prime is 111111201011141. The reversal of 111111201011111 is 111110102111111.

It is not a de Polignac number, because 111111201011111 - 2³⁴ = 111094021141927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111201011141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58820116055 + ... + 58820117943.

It is an arithmetic number, because the mean of its divisors is an integer number (1411693920000).

Almost surely, 2^{111111201011111} is an apocalyptic number.

111111201011111 is a deficient number, since it is larger than the sum of its proper divisors (24411415308889).

111111201011111 is a wasteful number, since it uses less digits than its factorization.

111111201011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733 (or 3726 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 111111201011111 its reverse (111110102111111), we get a palindrome (222221303122222).

The spelling of 111111201011111 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred one million, eleven thousand, one hundred eleven".