112112203121 has 4 divisors (see below), whose sum is σ = 112118943972. Its totient is φ = 112105462272.

The previous prime is 112112203051. The next prime is 112112203127. The reversal of 112112203121 is 121302211211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121302211211 = 207847 ⋅583613.

It can be written as a sum of positive squares in 2 ways, for example, as 45205138225 + 66907064896 = 212615^2 + 258664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112112203121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112112203121.

It is not an unprimeable number, because it can be changed into a prime (112112203127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3345416 + ... + 3378761.

It is an arithmetic number, because the mean of its divisors is an integer number (28029735993).

Almost surely, 2^112112203121 is an apocalyptic number.

It is an amenable number.

112112203121 is a deficient number, since it is larger than the sum of its proper divisors (6740851).

112112203121 is an equidigital number, since it uses as much as digits as its factorization.

112112203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740850.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 112112203121 its reverse (121302211211), we get a palindrome (233414414332).

The spelling of 112112203121 in words is "one hundred twelve billion, one hundred twelve million, two hundred three thousand, one hundred twenty-one".