123120110121 has 8 divisors (see below), whose sum is σ = 166851297024. Its totient is φ = 80734498320.

The previous prime is 123120110081. The next prime is 123120110129. The reversal of 123120110121 is 121011021321.

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

It is not a de Polignac number, because 123120110121 - 2¹⁰ = 123120109097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123120110121.

It is not an unprimeable number, because it can be changed into a prime (123120110129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336393561 + ... + 336393926.

It is an arithmetic number, because the mean of its divisors is an integer number (20856412128).

Almost surely, 2^123120110121 is an apocalyptic number.

It is an amenable number.

123120110121 is a deficient number, since it is larger than the sum of its proper divisors (43731186903).

123120110121 is an equidigital number, since it uses as much as digits as its factorization.

123120110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672787551.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 123120110121 its reverse (121011021321), we get a palindrome (244131131442).

The spelling of 123120110121 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-one".