123001120015 has 32 divisors (see below), whose sum is σ = 158366509056. Its totient is φ = 91536324480.

The previous prime is 123001120013. The next prime is 123001120043. The reversal of 123001120015 is 510021100321.

It is not a de Polignac number, because 123001120015 - 2¹ = 123001120013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001120013) 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 31 ways as a sum of consecutive naturals, for example, 346804 + ... + 605206.

It is an arithmetic number, because the mean of its divisors is an integer number (4948953408).

Almost surely, 2^123001120015 is an apocalyptic number.

123001120015 is a deficient number, since it is larger than the sum of its proper divisors (35365389041).

123001120015 is a wasteful number, since it uses less digits than its factorization.

123001120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258559.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 123001120015 its reverse (510021100321), we get a palindrome (633022220336).

The spelling of 123001120015 in words is "one hundred twenty-three billion, one million, one hundred twenty thousand, fifteen".