12212111012011 has 2 divisors, whose sum is σ = 12212111012012. Its totient is φ = 12212111012010.

The previous prime is 12212111012009. The next prime is 12212111012039. The reversal of 12212111012011 is 11021011121221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212111012011 - 2¹ = 12212111012009 is a prime.

Together with 12212111012009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12212111012411) 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 as a sum of consecutive naturals, namely, 6106055506005 + 6106055506006.

It is an arithmetic number, because the mean of its divisors is an integer number (6106055506006).

Almost surely, 2^{12212111012011} is an apocalyptic number.

12212111012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212111012011 is an equidigital number, since it uses as much as digits as its factorization.

12212111012011 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12212111012011 its reverse (11021011121221), we get a palindrome (23233122133232).

The spelling of 12212111012011 in words is "twelve trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, eleven".