112121123 has 4 divisors (see below), whose sum is σ = 112190208. Its totient is φ = 112052040.

The previous prime is 112121117. The next prime is 112121143. The reversal of 112121123 is 321121211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321121211 = 17 ⋅18889483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121123 is a prime.

It is a super-2 number, since 2×112121123² = 25142292445562258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121098 and 112121107.

It is not an unprimeable number, because it can be changed into a prime (112121143) 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, 32048 + ... + 35373.

It is an arithmetic number, because the mean of its divisors is an integer number (28047552).

Almost surely, 2^112121123 is an apocalyptic number.

112121123 is a deficient number, since it is larger than the sum of its proper divisors (69085).

112121123 is an equidigital number, since it uses as much as digits as its factorization.

112121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69084.

The product of its digits is 24, while the sum is 14.

The square root of 112121123 is about 10588.7262217889. The cubic root of 112121123 is about 482.2021543175.

Adding to 112121123 its reverse (321121211), we get a palindrome (433242334).

The spelling of 112121123 in words is "one hundred twelve million, one hundred twenty-one thousand, one hundred twenty-three".