120001320123 has 16 divisors (see below), whose sum is σ = 167120395776. Its totient is φ = 76448313920.

The previous prime is 120001320083. The next prime is 120001320143. The reversal of 120001320123 is 321023100021.

It is a cyclic number.

It is not a de Polignac number, because 120001320123 - 2⁹ = 120001319611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120001320143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772290 + ... + 914567.

It is an arithmetic number, because the mean of its divisors is an integer number (10445024736).

Almost surely, 2^120001320123 is an apocalyptic number.

120001320123 is a deficient number, since it is larger than the sum of its proper divisors (47119075653).

120001320123 is a wasteful number, since it uses less digits than its factorization.

120001320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687914.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 120001320123 its reverse (321023100021), we get a palindrome (441024420144).

The spelling of 120001320123 in words is "one hundred twenty billion, one million, three hundred twenty thousand, one hundred twenty-three".