212301221001173 has 2 divisors, whose sum is σ = 212301221001174. Its totient is φ = 212301221001172.

The previous prime is 212301221001161. The next prime is 212301221001253. The reversal of 212301221001173 is 371100122103212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148451244979249 + 63849976021924 = 12184057^2 + 7990618^2 .

It is a cyclic number.

It is not a de Polignac number, because 212301221001173 - 2⁶ = 212301221001109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212301221001773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106150610500586 + 106150610500587.

It is an arithmetic number, because the mean of its divisors is an integer number (106150610500587).

Almost surely, 2^{212301221001173} is an apocalyptic number.

It is an amenable number.

212301221001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

212301221001173 is an equidigital number, since it uses as much as digits as its factorization.

212301221001173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 212301221001173 its reverse (371100122103212), we get a palindrome (583401343104385).

The spelling of 212301221001173 in words is "two hundred twelve trillion, three hundred one billion, two hundred twenty-one million, one thousand, one hundred seventy-three".