212612216111 has 2 divisors, whose sum is σ = 212612216112. Its totient is φ = 212612216110.

The previous prime is 212612216093. The next prime is 212612216221. The reversal of 212612216111 is 111612216212.

It is a happy number.

212612216111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212612216111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212612216611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106306108055 + 106306108056.

It is an arithmetic number, because the mean of its divisors is an integer number (106306108056).

Almost surely, 2^212612216111 is an apocalyptic number.

212612216111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212612216111 is an equidigital number, since it uses as much as digits as its factorization.

212612216111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The spelling of 212612216111 in words is "two hundred twelve billion, six hundred twelve million, two hundred sixteen thousand, one hundred eleven".