212011120212161 has 2 divisors, whose sum is σ = 212011120212162. Its totient is φ = 212011120212160.

The previous prime is 212011120212137. The next prime is 212011120212169. The reversal of 212011120212161 is 161212021110212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135057960645136 + 76953159567025 = 11621444^2 + 8772295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011120212161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011120212169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005560106080 + 106005560106081.

It is an arithmetic number, because the mean of its divisors is an integer number (106005560106081).

Almost surely, 2^{212011120212161} is an apocalyptic number.

It is an amenable number.

212011120212161 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011120212161 is an equidigital number, since it uses as much as digits as its factorization.

212011120212161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 212011120212161 its reverse (161212021110212), we get a palindrome (373223141322373).

The spelling of 212011120212161 in words is "two hundred twelve trillion, eleven billion, one hundred twenty million, two hundred twelve thousand, one hundred sixty-one".