112221113121 has 20 divisors (see below), whose sum is σ = 180534252052. Its totient is φ = 69059145888.

The previous prime is 112221113057. The next prime is 112221113131. The reversal of 112221113121 is 121311122211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72516565521 + 39704547600 = 269289^2 + 199260^2 .

It is not a de Polignac number, because 112221113121 - 2⁶ = 112221113057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112221113094 and 112221113103.

It is not an unprimeable number, because it can be changed into a prime (112221113131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53285326 + ... + 53287431.

Almost surely, 2^112221113121 is an apocalyptic number.

It is an amenable number.

112221113121 is a deficient number, since it is larger than the sum of its proper divisors (68313138931).

112221113121 is a wasteful number, since it uses less digits than its factorization.

112221113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106572782 (or 106572773 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 112221113121 its reverse (121311122211), we get a palindrome (233532235332).

The spelling of 112221113121 in words is "one hundred twelve billion, two hundred twenty-one million, one hundred thirteen thousand, one hundred twenty-one".