111112101101 has 4 divisors (see below), whose sum is σ = 111114101052. Its totient is φ = 111110101152.

The previous prime is 111112101097. The next prime is 111112101143. The reversal of 111112101101 is 101101211111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81450306025 + 29661795076 = 285395^2 + 172226^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112101101 - 2² = 111112101097 is a prime.

It is a super-2 number, since 2×111112101101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112101151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914186 + ... + 1028571.

It is an arithmetic number, because the mean of its divisors is an integer number (27778525263).

Almost surely, 2^111112101101 is an apocalyptic number.

It is an amenable number.

111112101101 is a deficient number, since it is larger than the sum of its proper divisors (1999951).

111112101101 is an equidigital number, since it uses as much as digits as its factorization.

111112101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999950.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111112101101 its reverse (101101211111), we get a palindrome (212213312212).

The spelling of 111112101101 in words is "one hundred eleven billion, one hundred twelve million, one hundred one thousand, one hundred one".