111432411111 has 24 divisors (see below), whose sum is σ = 172931068800. Its totient is φ = 63639880752.

The previous prime is 111432411091. The next prime is 111432411127. The reversal of 111432411111 is 111114234111.

It is not a de Polignac number, because 111432411111 - 2¹⁰ = 111432410087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111432411151) 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, 50590 + ... + 474788.

It is an arithmetic number, because the mean of its divisors is an integer number (7205461200).

Almost surely, 2^111432411111 is an apocalyptic number.

111432411111 is a deficient number, since it is larger than the sum of its proper divisors (61498657689).

111432411111 is a wasteful number, since it uses less digits than its factorization.

111432411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426003 (or 425996 counting only the distinct ones).

The product of its digits is 96, while the sum is 21.

Adding to 111432411111 its reverse (111114234111), we get a palindrome (222546645222).

The spelling of 111432411111 in words is "one hundred eleven billion, four hundred thirty-two million, four hundred eleven thousand, one hundred eleven".