212011010173 has 2 divisors, whose sum is σ = 212011010174. Its totient is φ = 212011010172.

The previous prime is 212011010153. The next prime is 212011010219. The reversal of 212011010173 is 371010110212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198878537764 + 13132472409 = 445958^2 + 114597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011010173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212011010173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212011010143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005505086 + 106005505087.

It is an arithmetic number, because the mean of its divisors is an integer number (106005505087).

Almost surely, 2^212011010173 is an apocalyptic number.

It is an amenable number.

212011010173 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011010173 is an equidigital number, since it uses as much as digits as its factorization.

212011010173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 212011010173 its reverse (371010110212), we get a palindrome (583021120385).

The spelling of 212011010173 in words is "two hundred twelve billion, eleven million, ten thousand, one hundred seventy-three".