112399938121 has 3 divisors (see below), whose sum is σ = 112400273383. Its totient is φ = 112399602860.

The previous prime is 112399938089. The next prime is 112399938181. The reversal of 112399938121 is 121839993211.

The square root of 112399938121 is 335261.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121839993211 = 31957 ⋅3812623.

It can be written as a sum of positive squares in only one way, i.e., 72759128121 + 39640810000 = 269739^2 + 199100^2 .

It is not a de Polignac number, because 112399938121 - 2⁵ = 112399938089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112399938181) 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 2 ways as a sum of consecutive naturals, for example, 167631 + ... + 502891.

Almost surely, 2^112399938121 is an apocalyptic number.

112399938121 is the 335261-st square number.

112399938121 is the 167631-st centered octagonal number.

It is an amenable number.

112399938121 is a deficient number, since it is larger than the sum of its proper divisors (335262).

112399938121 is an frugal number, since it uses more digits than its factorization.

112399938121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670522 (or 335261 counting only the distinct ones).

The product of its digits is 209952, while the sum is 49.

Multiplying 112399938121 by its sum of digits (49), we get a square (5507596967929 = 2346827²).

The spelling of 112399938121 in words is "one hundred twelve billion, three hundred ninety-nine million, nine hundred thirty-eight thousand, one hundred twenty-one".