2105234121173 has 2 divisors, whose sum is σ = 2105234121174. Its totient is φ = 2105234121172.

The previous prime is 2105234121149. The next prime is 2105234121197. The reversal of 2105234121173 is 3711214325012.

It is a balanced prime because it is at equal distance from previous prime (2105234121149) and next prime (2105234121197).

It can be written as a sum of positive squares in only one way, i.e., 1836721536049 + 268512585124 = 1355257^2 + 518182^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105234121173 - 2⁸ = 2105234120917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105234121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052617060586 + 1052617060587.

It is an arithmetic number, because the mean of its divisors is an integer number (1052617060587).

Almost surely, 2^{2105234121173} is an apocalyptic number.

It is an amenable number.

2105234121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105234121173 is an equidigital number, since it uses as much as digits as its factorization.

2105234121173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 2105234121173 its reverse (3711214325012), we get a palindrome (5816448446185).

The spelling of 2105234121173 in words is "two trillion, one hundred five billion, two hundred thirty-four million, one hundred twenty-one thousand, one hundred seventy-three".