112612121 has 4 divisors (see below), whose sum is σ = 114736932. Its totient is φ = 110487312.

The previous prime is 112612109. The next prime is 112612169. The reversal of 112612121 is 121216211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121216211 = 61 ⋅1987151.

It can be written as a sum of positive squares in 2 ways, for example, as 62980096 + 49632025 = 7936^2 + 7045^2 .

It is a cyclic number.

It is not a de Polignac number, because 112612121 - 2¹⁸ = 112349977 is a prime.

It is a super-3 number, since 3×112612121³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 112612121.

It is not an unprimeable number, because it can be changed into a prime (112612021) 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, 1062326 + ... + 1062431.

It is an arithmetic number, because the mean of its divisors is an integer number (28684233).

Almost surely, 2^112612121 is an apocalyptic number.

It is an amenable number.

112612121 is a deficient number, since it is larger than the sum of its proper divisors (2124811).

112612121 is an equidigital number, since it uses as much as digits as its factorization.

112612121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124810.

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

The square root of 112612121 is about 10611.8858361745. The cubic root of 112612121 is about 482.9050118478.

Adding to 112612121 its reverse (121216211), we get a palindrome (233828332).

The spelling of 112612121 in words is "one hundred twelve million, six hundred twelve thousand, one hundred twenty-one".