111120201111 has 16 divisors (see below), whose sum is σ = 149951960928. Its totient is φ = 73187472000.

The previous prime is 111120201083. The next prime is 111120201119. The reversal of 111120201111 is 111102021111.

It is not a de Polignac number, because 111120201111 - 2¹⁵ = 111120168343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120201119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258076 + ... + 537441.

It is an arithmetic number, because the mean of its divisors is an integer number (9371997558).

Almost surely, 2^111120201111 is an apocalyptic number.

111120201111 is a deficient number, since it is larger than the sum of its proper divisors (38831759817).

111120201111 is a wasteful number, since it uses less digits than its factorization.

111120201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796082.

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

Adding to 111120201111 its reverse (111102021111), we get a palindrome (222222222222).

The spelling of 111120201111 in words is "one hundred eleven billion, one hundred twenty million, two hundred one thousand, one hundred eleven".