12012021101005 has 32 divisors (see below), whose sum is σ = 15543250882560. Its totient is φ = 8884094929920.

The previous prime is 12012021100999. The next prime is 12012021101009. The reversal of 12012021101005 is 50010112021021.

It is not a de Polignac number, because 12012021101005 - 2¹⁵ = 12012021068237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012021101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012021101009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7424764 + ... + 8896693.

It is an arithmetic number, because the mean of its divisors is an integer number (485726590080).

Almost surely, 2^{12012021101005} is an apocalyptic number.

It is an amenable number.

12012021101005 is a deficient number, since it is larger than the sum of its proper divisors (3531229781555).

12012021101005 is a wasteful number, since it uses less digits than its factorization.

12012021101005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321669.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 12012021101005 its reverse (50010112021021), we get a palindrome (62022133122026).

The spelling of 12012021101005 in words is "twelve trillion, twelve billion, twenty-one million, one hundred one thousand, five".