212201112210173 has 2 divisors, whose sum is σ = 212201112210174. Its totient is φ = 212201112210172.

The previous prime is 212201112210103. The next prime is 212201112210193. The reversal of 212201112210173 is 371012211102212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201572612431129 + 10628499779044 = 14197627^2 + 3260138^2 .

It is a cyclic number.

It is not a de Polignac number, because 212201112210173 - 2²⁴ = 212201095432957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212201112210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100556105086 + 106100556105087.

It is an arithmetic number, because the mean of its divisors is an integer number (106100556105087).

Almost surely, 2^{212201112210173} is an apocalyptic number.

It is an amenable number.

212201112210173 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201112210173 is an equidigital number, since it uses as much as digits as its factorization.

212201112210173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 212201112210173 its reverse (371012211102212), we get a palindrome (583213323312385).

The spelling of 212201112210173 in words is "two hundred twelve trillion, two hundred one billion, one hundred twelve million, two hundred ten thousand, one hundred seventy-three".