12001331023 has 16 divisors (see below), whose sum is σ = 13671415296. Its totient is φ = 10428438240.

The previous prime is 12001331009. The next prime is 12001331039. The reversal of 12001331023 is 32013310021.

It is not a de Polignac number, because 12001331023 - 2²⁵ = 11967776591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001330988 and 12001331006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001331053) 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, 351286 + ... + 383932.

It is an arithmetic number, because the mean of its divisors is an integer number (854463456).

Almost surely, 2^12001331023 is an apocalyptic number.

12001331023 is a deficient number, since it is larger than the sum of its proper divisors (1670084273).

12001331023 is a wasteful number, since it uses less digits than its factorization.

12001331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34134.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12001331023 its reverse (32013310021), we get a palindrome (44014641044).

The spelling of 12001331023 in words is "twelve billion, one million, three hundred thirty-one thousand, twenty-three".