12012021122211 has 32 divisors (see below), whose sum is σ = 19443097290240. Its totient is φ = 7268864119200.

The previous prime is 12012021122191. The next prime is 12012021122263. The reversal of 12012021122211 is 11222112021021.

12012021122211 is a `hidden beast` number, since 1 + 201 + 20 + 211 + 22 + 211 = 666.

It is not a de Polignac number, because 12012021122211 - 2⁶ = 12012021122147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012021122291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30774295 + ... + 31162176.

It is an arithmetic number, because the mean of its divisors is an integer number (607596790320).

Almost surely, 2^{12012021122211} is an apocalyptic number.

12012021122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012021122211 is a deficient number, since it is larger than the sum of its proper divisors (7431076168029).

12012021122211 is a wasteful number, since it uses less digits than its factorization.

12012021122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61937144 (or 61937138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12012021122211 its reverse (11222112021021), we get a palindrome (23234133143232).

The spelling of 12012021122211 in words is "twelve trillion, twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred eleven".