210202102202161 has 2 divisors, whose sum is σ = 210202102202162. Its totient is φ = 210202102202160.

The previous prime is 210202102202119. The next prime is 210202102202201. The reversal of 210202102202161 is 161202201202012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172726462791936 + 37475639410225 = 13142544^2 + 6121735^2 .

It is a cyclic number.

It is not a de Polignac number, because 210202102202161 - 2¹⁷ = 210202102071089 is a prime.

It is not a weakly prime, because it can be changed into another prime (210202102202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101051101080 + 105101051101081.

It is an arithmetic number, because the mean of its divisors is an integer number (105101051101081).

Almost surely, 2^{210202102202161} is an apocalyptic number.

It is an amenable number.

210202102202161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210202102202161 is an equidigital number, since it uses as much as digits as its factorization.

210202102202161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 210202102202161 its reverse (161202201202012), we get a palindrome (371404303404173).

The spelling of 210202102202161 in words is "two hundred ten trillion, two hundred two billion, one hundred two million, two hundred two thousand, one hundred sixty-one".