211001110121173 has 2 divisors, whose sum is σ = 211001110121174. Its totient is φ = 211001110121172.

The previous prime is 211001110121147. The next prime is 211001110121231. The reversal of 211001110121173 is 371121011100112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111830244300324 + 99170865820849 = 10574982^2 + 9958457^2 .

It is a cyclic number.

It is not a de Polignac number, because 211001110121173 - 2⁵ = 211001110121141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211001110124173) 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, 105500555060586 + 105500555060587.

It is an arithmetic number, because the mean of its divisors is an integer number (105500555060587).

Almost surely, 2^{211001110121173} is an apocalyptic number.

It is an amenable number.

211001110121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001110121173 is an equidigital number, since it uses as much as digits as its factorization.

211001110121173 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 22.

Adding to 211001110121173 its reverse (371121011100112), we get a palindrome (582122121221285).

The spelling of 211001110121173 in words is "two hundred eleven trillion, one billion, one hundred ten million, one hundred twenty-one thousand, one hundred seventy-three".