12001221003023 has 16 divisors (see below), whose sum is σ = 14035777916160. Its totient is φ = 10046726718336.

The previous prime is 12001221003019. The next prime is 12001221003041. The reversal of 12001221003023 is 32030012210021.

It is not a de Polignac number, because 12001221003023 - 2² = 12001221003019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001221002992 and 12001221003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001221003923) 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, 2166368 + ... + 5356826.

It is an arithmetic number, because the mean of its divisors is an integer number (877236119760).

Almost surely, 2^{12001221003023} is an apocalyptic number.

12001221003023 is a deficient number, since it is larger than the sum of its proper divisors (2034556913137).

12001221003023 is a wasteful number, since it uses less digits than its factorization.

12001221003023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203006.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12001221003023 its reverse (32030012210021), we get a palindrome (44031233213044).

The spelling of 12001221003023 in words is "twelve trillion, one billion, two hundred twenty-one million, three thousand, twenty-three".