12001211210042 has 16 divisors (see below), whose sum is σ = 18169459751520. Its totient is φ = 5944739709168.

The previous prime is 12001211210041. The next prime is 12001211210057. The reversal of 12001211210042 is 24001211210021.

It is a self number, because there is not a number n which added to its sum of digits gives 12001211210042.

It is not an unprimeable number, because it can be changed into a prime (12001211210041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2174108 + ... + 5359959.

It is an arithmetic number, because the mean of its divisors is an integer number (1135591234470).

Almost surely, 2^{12001211210042} is an apocalyptic number.

12001211210042 is a deficient number, since it is larger than the sum of its proper divisors (6168248541478).

12001211210042 is a wasteful number, since it uses less digits than its factorization.

12001211210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7541485.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12001211210042 its reverse (24001211210021), we get a palindrome (36002422420063).

The spelling of 12001211210042 in words is "twelve trillion, one billion, two hundred eleven million, two hundred ten thousand, forty-two".