111131121 has 8 divisors (see below), whose sum is σ = 148324320. Its totient is φ = 74012672.

The previous prime is 111131087. The next prime is 111131123. The reversal of 111131121 is 121131111.

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

It is a cyclic number.

It is not a de Polignac number, because 111131121 - 2⁷ = 111130993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111131097 and 111131106.

It is not an unprimeable number, because it can be changed into a prime (111131123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15120 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (18540540).

Almost surely, 2^111131121 is an apocalyptic number.

It is an amenable number.

111131121 is a deficient number, since it is larger than the sum of its proper divisors (37193199).

111131121 is a wasteful number, since it uses less digits than its factorization.

111131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37375.

The product of its digits is 6, while the sum is 12.

The square root of 111131121 is about 10541.8746435347. The cubic root of 111131121 is about 480.7787142905.

Adding to 111131121 its reverse (121131111), we get a palindrome (232262232).

The spelling of 111131121 in words is "one hundred eleven million, one hundred thirty-one thousand, one hundred twenty-one".