12001231203111 has 24 divisors (see below), whose sum is σ = 17663159007936. Its totient is φ = 7849430946240.

The previous prime is 12001231203041. The next prime is 12001231203119. The reversal of 12001231203111 is 11130213210021.

12001231203111 is a `hidden beast` number, since 120 + 0 + 1 + 231 + 2 + 0 + 311 + 1 = 666.

It is not a de Polignac number, because 12001231203111 - 2⁴¹ = 9802207947559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001231203119) 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 23 ways as a sum of consecutive naturals, for example, 8124466 + ... + 9487328.

It is an arithmetic number, because the mean of its divisors is an integer number (735964958664).

Almost surely, 2^{12001231203111} is an apocalyptic number.

12001231203111 is a deficient number, since it is larger than the sum of its proper divisors (5661927804825).

12001231203111 is a wasteful number, since it uses less digits than its factorization.

12001231203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381383 (or 1381380 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12001231203111 its reverse (11130213210021), we get a palindrome (23131444413132).

The spelling of 12001231203111 in words is "twelve trillion, one billion, two hundred thirty-one million, two hundred three thousand, one hundred eleven".