111320031121 has 12 divisors (see below), whose sum is σ = 120552495132. Its totient is φ = 102747842496.

The previous prime is 111320031113. The next prime is 111320031143. The reversal of 111320031121 is 121130023111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 43374310225 + 67945720896 = 208265^2 + 260664^2 .

It is not a de Polignac number, because 111320031121 - 2³ = 111320031113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111320031095 and 111320031104.

It is not an unprimeable number, because it can be changed into a prime (111320031421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2560255 + ... + 2603371.

It is an arithmetic number, because the mean of its divisors is an integer number (10046041261).

Almost surely, 2^111320031121 is an apocalyptic number.

It is an amenable number.

111320031121 is a deficient number, since it is larger than the sum of its proper divisors (9232464011).

111320031121 is a wasteful number, since it uses less digits than its factorization.

111320031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58420 (or 58407 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111320031121 its reverse (121130023111), we get a palindrome (232450054232).

The spelling of 111320031121 in words is "one hundred eleven billion, three hundred twenty million, thirty-one thousand, one hundred twenty-one".