2002120001173 has 2 divisors, whose sum is σ = 2002120001174. Its totient is φ = 2002120001172.

The previous prime is 2002120001153. The next prime is 2002120001227. The reversal of 2002120001173 is 3711000212002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1351971284049 + 650148717124 = 1162743^2 + 806318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002120001173 - 2²⁵ = 2002086446741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002120001173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002120001153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001060000586 + 1001060000587.

It is an arithmetic number, because the mean of its divisors is an integer number (1001060000587).

Almost surely, 2^{2002120001173} is an apocalyptic number.

It is an amenable number.

2002120001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002120001173 is an equidigital number, since it uses as much as digits as its factorization.

2002120001173 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 2002120001173 its reverse (3711000212002), we get a palindrome (5713120213175).

The spelling of 2002120001173 in words is "two trillion, two billion, one hundred twenty million, one thousand, one hundred seventy-three".