12001021201211 has 16 divisors (see below), whose sum is σ = 13984413407424. Its totient is φ = 10085151882624.

The previous prime is 12001021201171. The next prime is 12001021201243. The reversal of 12001021201211 is 11210212010021.

It is not a de Polignac number, because 12001021201211 - 2⁴² = 7602974690107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001021801211) 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 15 ways as a sum of consecutive naturals, for example, 11270576 + ... + 12289341.

It is an arithmetic number, because the mean of its divisors is an integer number (874025837964).

Almost surely, 2^{12001021201211} is an apocalyptic number.

12001021201211 is a deficient number, since it is larger than the sum of its proper divisors (1983392206213).

12001021201211 is a wasteful number, since it uses less digits than its factorization.

12001021201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23561350.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12001021201211 its reverse (11210212010021), we get a palindrome (23211233211232).

The spelling of 12001021201211 in words is "twelve trillion, one billion, twenty-one million, two hundred one thousand, two hundred eleven".