12001001103123 has 8 divisors (see below), whose sum is σ = 16002203241408. Its totient is φ = 8000233183464.

The previous prime is 12001001103109. The next prime is 12001001103131. The reversal of 12001001103123 is 32130110010021.

It is a happy number.

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

It is not a de Polignac number, because 12001001103123 - 2⁴ = 12001001103107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001001103523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108490161 + ... + 108600722.

It is an arithmetic number, because the mean of its divisors is an integer number (2000275405176).

Almost surely, 2^{12001001103123} is an apocalyptic number.

12001001103123 is a deficient number, since it is larger than the sum of its proper divisors (4001202138285).

12001001103123 is a wasteful number, since it uses less digits than its factorization.

12001001103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217109313.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12001001103123 its reverse (32130110010021), we get a palindrome (44131111113144).

The spelling of 12001001103123 in words is "twelve trillion, one billion, one million, one hundred three thousand, one hundred twenty-three".