212120211120211 has 2 divisors, whose sum is σ = 212120211120212. Its totient is φ = 212120211120210.

The previous prime is 212120211120199. The next prime is 212120211120229. The reversal of 212120211120211 is 112021112021212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120211120211 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120241120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060105560105 + 106060105560106.

It is an arithmetic number, because the mean of its divisors is an integer number (106060105560106).

Almost surely, 2^{212120211120211} is an apocalyptic number.

212120211120211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120211120211 is an equidigital number, since it uses as much as digits as its factorization.

212120211120211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212120211120211 its reverse (112021112021212), we get a palindrome (324141323141423).

The spelling of 212120211120211 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred eleven million, one hundred twenty thousand, two hundred eleven".