212222212111211 has 2 divisors, whose sum is σ = 212222212111212. Its totient is φ = 212222212111210.

The previous prime is 212222212111193. The next prime is 212222212111289. The reversal of 212222212111211 is 112111212222212.

212222212111211 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-212222212111211 is a prime.

It is not a weakly prime, because it can be changed into another prime (212222212141211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111106055605 + 106111106055606.

It is an arithmetic number, because the mean of its divisors is an integer number (106111106055606).

Almost surely, 2^{212222212111211} is an apocalyptic number.

212222212111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222212111211 is an equidigital number, since it uses as much as digits as its factorization.

212222212111211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 23.

Adding to 212222212111211 its reverse (112111212222212), we get a palindrome (324333424333423).

The spelling of 212222212111211 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred eleven".