2122011998173 has 2 divisors, whose sum is σ = 2122011998174. Its totient is φ = 2122011998172.

The previous prime is 2122011998153. The next prime is 2122011998177. The reversal of 2122011998173 is 3718991102212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364368835844 + 757643162329 = 1168062^2 + 870427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122011998173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122011998177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061005999086 + 1061005999087.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005999087).

Almost surely, 2^{2122011998173} is an apocalyptic number.

It is an amenable number.

2122011998173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122011998173 is an equidigital number, since it uses as much as digits as its factorization.

2122011998173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 2122011998173 in words is "two trillion, one hundred twenty-two billion, eleven million, nine hundred ninety-eight thousand, one hundred seventy-three".