2000021102173 has 2 divisors, whose sum is σ = 2000021102174. Its totient is φ = 2000021102172.

The previous prime is 2000021102143. The next prime is 2000021102269. The reversal of 2000021102173 is 3712011200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1419441108409 + 580579993764 = 1191403^2 + 761958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000021102173 - 2⁵ = 2000021102141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2000021102173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000021102143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000010551086 + 1000010551087.

It is an arithmetic number, because the mean of its divisors is an integer number (1000010551087).

Almost surely, 2^{2000021102173} is an apocalyptic number.

It is an amenable number.

2000021102173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000021102173 is an equidigital number, since it uses as much as digits as its factorization.

2000021102173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 2000021102173 its reverse (3712011200002), we get a palindrome (5712032302175).

The spelling of 2000021102173 in words is "two trillion, twenty-one million, one hundred two thousand, one hundred seventy-three".