12012021011211 has 32 divisors (see below), whose sum is σ = 18174520385280. Its totient is φ = 6995747088000.

The previous prime is 12012021011191. The next prime is 12012021011239. The reversal of 12012021011211 is 11211012021021.

It is a happy number.

It is not a de Polignac number, because 12012021011211 - 2⁶ = 12012021011147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012021011311) 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 31 ways as a sum of consecutive naturals, for example, 7627840 + ... + 9066861.

It is an arithmetic number, because the mean of its divisors is an integer number (567953762040).

Almost surely, 2^{12012021011211} is an apocalyptic number.

12012021011211 is a deficient number, since it is larger than the sum of its proper divisors (6162499374069).

12012021011211 is a wasteful number, since it uses less digits than its factorization.

12012021011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16695707.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12012021011211 its reverse (11211012021021), we get a palindrome (23223033032232).

The spelling of 12012021011211 in words is "twelve trillion, twelve billion, twenty-one million, eleven thousand, two hundred eleven".