12001211222012 has 24 divisors (see below), whose sum is σ = 21299085878112. Its totient is φ = 5915767334400.

The previous prime is 12001211221921. The next prime is 12001211222027. The reversal of 12001211222012 is 21022211210021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4105328 + ... + 6391880.

It is an arithmetic number, because the mean of its divisors is an integer number (887461911588).

Almost surely, 2^{12001211222012} is an apocalyptic number.

It is an amenable number.

12001211222012 is a deficient number, since it is larger than the sum of its proper divisors (9297874656100).

12001211222012 is a wasteful number, since it uses less digits than its factorization.

12001211222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305109 (or 2305107 counting only the distinct ones).

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

Adding to 12001211222012 its reverse (21022211210021), we get a palindrome (33023422432033).

The spelling of 12001211222012 in words is "twelve trillion, one billion, two hundred eleven million, two hundred twenty-two thousand, twelve".