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12001230173 is a prime number
BaseRepresentation
bin10110010110101010…
…00011110101011101
31010222101102122211102
423023111003311131
5144034303331143
65302512002445
7603254526152
oct131325036535
933871378742
1012001230173
1150a9421949
1223ab230425
1311934a573a
1481bc5c229
154a39150b8
hex2cb543d5d

12001230173 has 2 divisors, whose sum is σ = 12001230174. Its totient is φ = 12001230172.

The previous prime is 12001230151. The next prime is 12001230221. The reversal of 12001230173 is 37103210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6697458244 + 5303771929 = 81838^2 + 72827^2 .

It is an emirp because it is prime and its reverse (37103210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12001230173 - 218 = 12000968029 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 (12001430173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000615086 + 6000615087.

It is an arithmetic number, because the mean of its divisors is an integer number (6000615087).

Almost surely, 212001230173 is an apocalyptic number.

It is an amenable number.

12001230173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001230173 is an equidigital number, since it uses as much as digits as its factorization.

12001230173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

Adding to 12001230173 its reverse (37103210021), we get a palindrome (49104440194).

The spelling of 12001230173 in words is "twelve billion, one million, two hundred thirty thousand, one hundred seventy-three".