202000002099173 has 2 divisors, whose sum is σ = 202000002099174. Its totient is φ = 202000002099172.

The previous prime is 202000002099113. The next prime is 202000002099199. The reversal of 202000002099173 is 371990200000202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122760682786564 + 79239319312609 = 11079742^2 + 8901647^2 .

It is a cyclic number.

It is not a de Polignac number, because 202000002099173 - 2¹² = 202000002095077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202000002099113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000001049586 + 101000001049587.

It is an arithmetic number, because the mean of its divisors is an integer number (101000001049587).

Almost surely, 2^{202000002099173} is an apocalyptic number.

It is an amenable number.

202000002099173 is a deficient number, since it is larger than the sum of its proper divisors (1).

202000002099173 is an equidigital number, since it uses as much as digits as its factorization.

202000002099173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

Adding to 202000002099173 its reverse (371990200000202), we get a palindrome (573990202099375).

The spelling of 202000002099173 in words is "two hundred two trillion, two million, ninety-nine thousand, one hundred seventy-three".