111131011121 has 16 divisors (see below), whose sum is σ = 120109760064. Its totient is φ = 102214012224.

The previous prime is 111131011097. The next prime is 111131011163. The reversal of 111131011121 is 121110131111.

It is a cyclic number.

It is not a de Polignac number, because 111131011121 - 2²² = 111126816817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111131011096 and 111131011105.

It is not an unprimeable number, because it can be changed into a prime (111131011421) 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, 12700670 + ... + 12709416.

It is an arithmetic number, because the mean of its divisors is an integer number (7506860004).

Almost surely, 2^111131011121 is an apocalyptic number.

It is an amenable number.

111131011121 is a deficient number, since it is larger than the sum of its proper divisors (8978748943).

111131011121 is a wasteful number, since it uses less digits than its factorization.

111131011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 111131011121 its reverse (121110131111), we get a palindrome (232241142232).

The spelling of 111131011121 in words is "one hundred eleven billion, one hundred thirty-one million, eleven thousand, one hundred twenty-one".