12012212222111 has 2 divisors, whose sum is σ = 12012212222112. Its totient is φ = 12012212222110.

The previous prime is 12012212222083. The next prime is 12012212222113. The reversal of 12012212222111 is 11122221221021.

It is a strong prime.

It is an emirp because it is prime and its reverse (11122221221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12012212222111 - 2¹⁴ = 12012212205727 is a prime.

Together with 12012212222113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012212222113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006106111055 + 6006106111056.

It is an arithmetic number, because the mean of its divisors is an integer number (6006106111056).

Almost surely, 2^{12012212222111} is an apocalyptic number.

12012212222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012212222111 is an equidigital number, since it uses as much as digits as its factorization.

12012212222111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12012212222111 its reverse (11122221221021), we get a palindrome (23134433443132).

The spelling of 12012212222111 in words is "twelve trillion, twelve billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".