121123110123123 has 16 divisors (see below), whose sum is σ = 162128249688480. Its totient is φ = 80433364525056.

The previous prime is 121123110123089. The next prime is 121123110123133. The reversal of 121123110123123 is 321321011321121.

It is not a de Polignac number, because 121123110123123 - 2⁸ = 121123110122867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121123110123093 and 121123110123102.

It is not an unprimeable number, because it can be changed into a prime (121123110123133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53185461 + ... + 55416057.

It is an arithmetic number, because the mean of its divisors is an integer number (10133015605530).

Almost surely, 2^{121123110123123} is an apocalyptic number.

121123110123123 is a deficient number, since it is larger than the sum of its proper divisors (41005139565357).

121123110123123 is a wasteful number, since it uses less digits than its factorization.

121123110123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301286.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 121123110123123 its reverse (321321011321121), we get a palindrome (442444121444244).

The spelling of 121123110123123 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, one hundred ten million, one hundred twenty-three thousand, one hundred twenty-three".