120123201123 has 12 divisors (see below), whose sum is σ = 179937634968. Its totient is φ = 80082133920.

The previous prime is 120123201061. The next prime is 120123201137. The reversal of 120123201123 is 321102321021.

It is not a de Polignac number, because 120123201123 - 2⁹ = 120123200611 is a prime.

It is a super-2 number, since 2×120123201123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120123201096 and 120123201105.

It is not an unprimeable number, because it can be changed into a prime (120123201173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247166838 + ... + 247167323.

It is an arithmetic number, because the mean of its divisors is an integer number (14994802914).

Almost surely, 2^120123201123 is an apocalyptic number.

120123201123 is a deficient number, since it is larger than the sum of its proper divisors (59814433845).

120123201123 is an frugal number, since it uses more digits than its factorization.

120123201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494334176 (or 494334164 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120123201123 its reverse (321102321021), we get a palindrome (441225522144).

The spelling of 120123201123 in words is "one hundred twenty billion, one hundred twenty-three million, two hundred one thousand, one hundred twenty-three".