212201214161 has 2 divisors, whose sum is σ = 212201214162. Its totient is φ = 212201214160.

The previous prime is 212201214143. The next prime is 212201214233. The reversal of 212201214161 is 161412102212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192342767761 + 19858446400 = 438569^2 + 140920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212201214161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212201214461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100607080 + 106100607081.

It is an arithmetic number, because the mean of its divisors is an integer number (106100607081).

Almost surely, 2^212201214161 is an apocalyptic number.

It is an amenable number.

212201214161 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201214161 is an equidigital number, since it uses as much as digits as its factorization.

212201214161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 212201214161 its reverse (161412102212), we get a palindrome (373613316373).

The spelling of 212201214161 in words is "two hundred twelve billion, two hundred one million, two hundred fourteen thousand, one hundred sixty-one".