111101111138 has 8 divisors (see below), whose sum is σ = 175422807120. Its totient is φ = 52626842100.

The previous prime is 111101111137. The next prime is 111101111161. The reversal of 111101111138 is 831111101111.

It is a happy number.

111101111138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111101111137) 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, 1461856688 + ... + 1461856763.

It is an arithmetic number, because the mean of its divisors is an integer number (21927850890).

Almost surely, 2^111101111138 is an apocalyptic number.

111101111138 is a deficient number, since it is larger than the sum of its proper divisors (64321695982).

111101111138 is a wasteful number, since it uses less digits than its factorization.

111101111138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923713472.

The product of its (nonzero) digits is 24, while the sum is 20.

Adding to 111101111138 its reverse (831111101111), we get a palindrome (942212212249).

The spelling of 111101111138 in words is "one hundred eleven billion, one hundred one million, one hundred eleven thousand, one hundred thirty-eight".