212213040161 has 2 divisors, whose sum is σ = 212213040162. Its totient is φ = 212213040160.

The previous prime is 212213040113. The next prime is 212213040167. The reversal of 212213040161 is 161040312212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208329257761 + 3883782400 = 456431^2 + 62320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212213040161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212213040167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106520080 + 106106520081.

It is an arithmetic number, because the mean of its divisors is an integer number (106106520081).

Almost surely, 2^212213040161 is an apocalyptic number.

It is an amenable number.

212213040161 is a deficient number, since it is larger than the sum of its proper divisors (1).

212213040161 is an equidigital number, since it uses as much as digits as its factorization.

212213040161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212213040161 its reverse (161040312212), we get a palindrome (373253352373).

The spelling of 212213040161 in words is "two hundred twelve billion, two hundred thirteen million, forty thousand, one hundred sixty-one".