211232321173 has 2 divisors, whose sum is σ = 211232321174. Its totient is φ = 211232321172.

The previous prime is 211232321117. The next prime is 211232321189. The reversal of 211232321173 is 371123232112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109533197764 + 101699123409 = 330958^2 + 318903^2 .

It is a cyclic number.

It is not a de Polignac number, because 211232321173 - 2¹³ = 211232312981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211232321273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105616160586 + 105616160587.

It is an arithmetic number, because the mean of its divisors is an integer number (105616160587).

Almost surely, 2^211232321173 is an apocalyptic number.

It is an amenable number.

211232321173 is a deficient number, since it is larger than the sum of its proper divisors (1).

211232321173 is an equidigital number, since it uses as much as digits as its factorization.

211232321173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

Adding to 211232321173 its reverse (371123232112), we get a palindrome (582355553285).

The spelling of 211232321173 in words is "two hundred eleven billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred seventy-three".