123120233121 has 8 divisors (see below), whose sum is σ = 165358561824. Its totient is φ = 81481029920.

The previous prime is 123120233059. The next prime is 123120233129. The reversal of 123120233121 is 121332021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123120233121 - 2⁷ = 123120232993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123120233129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149780895 + ... + 149781716.

It is an arithmetic number, because the mean of its divisors is an integer number (20669820228).

Almost surely, 2^123120233121 is an apocalyptic number.

It is an amenable number.

123120233121 is a deficient number, since it is larger than the sum of its proper divisors (42238328703).

123120233121 is a wasteful number, since it uses less digits than its factorization.

123120233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299562751.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123120233121 its reverse (121332021321), we get a palindrome (244452254442).

The spelling of 123120233121 in words is "one hundred twenty-three billion, one hundred twenty million, two hundred thirty-three thousand, one hundred twenty-one".