212000222173 has 2 divisors, whose sum is σ = 212000222174. Its totient is φ = 212000222172.

The previous prime is 212000222153. The next prime is 212000222177. The reversal of 212000222173 is 371222000212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107398432089 + 104601790084 = 327717^2 + 323422^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000222173 - 2²¹ = 211998125021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212000222177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000111086 + 106000111087.

It is an arithmetic number, because the mean of its divisors is an integer number (106000111087).

Almost surely, 2^212000222173 is an apocalyptic number.

It is an amenable number.

212000222173 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000222173 is an equidigital number, since it uses as much as digits as its factorization.

212000222173 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 22.

Adding to 212000222173 its reverse (371222000212), we get a palindrome (583222222385).

The spelling of 212000222173 in words is "two hundred twelve billion, two hundred twenty-two thousand, one hundred seventy-three".