12012112221211 has 16 divisors (see below), whose sum is σ = 12276972302848. Its totient is φ = 11749830840000.

The previous prime is 12012112221203. The next prime is 12012112221233. The reversal of 12012112221211 is 11212221121021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012112221211 - 2³ = 12012112221203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012112221251) 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, 25575751 + ... + 26041183.

It is an arithmetic number, because the mean of its divisors is an integer number (767310768928).

Almost surely, 2^{12012112221211} is an apocalyptic number.

12012112221211 is a deficient number, since it is larger than the sum of its proper divisors (264860081637).

12012112221211 is a wasteful number, since it uses less digits than its factorization.

12012112221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468202.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12012112221211 its reverse (11212221121021), we get a palindrome (23224333342232).

The spelling of 12012112221211 in words is "twelve trillion, twelve billion, one hundred twelve million, two hundred twenty-one thousand, two hundred eleven".