112012320121 has 4 divisors (see below), whose sum is σ = 120628652452. Its totient is φ = 103395987792.

The previous prime is 112012320103. The next prime is 112012320137. The reversal of 112012320121 is 121023210211.

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 70990273600 + 41022046521 = 266440^2 + 202539^2 .

It is a cyclic number.

It is not a de Polignac number, because 112012320121 - 2²⁷ = 111878102393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112012320095 and 112012320104.

It is not an unprimeable number, because it can be changed into a prime (112012321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308166146 + ... + 4308166171.

It is an arithmetic number, because the mean of its divisors is an integer number (30157163113).

Almost surely, 2^112012320121 is an apocalyptic number.

It is an amenable number.

112012320121 is a deficient number, since it is larger than the sum of its proper divisors (8616332331).

112012320121 is an equidigital number, since it uses as much as digits as its factorization.

112012320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8616332330.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 112012320121 its reverse (121023210211), we get a palindrome (233035530332).

The spelling of 112012320121 in words is "one hundred twelve billion, twelve million, three hundred twenty thousand, one hundred twenty-one".