12280321871 has 2 divisors, whose sum is σ = 12280321872. Its totient is φ = 12280321870.

The previous prime is 12280321849. The next prime is 12280321873. The reversal of 12280321871 is 17812308221.

It is a strong prime.

It is an emirp because it is prime and its reverse (17812308221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12280321871 - 2¹⁰ = 12280320847 is a prime.

It is a super-3 number, since 3×12280321871³ (a number of 31 digits) contains 333 as substring.

Together with 12280321873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12280321873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140160935 + 6140160936.

It is an arithmetic number, because the mean of its divisors is an integer number (6140160936).

Almost surely, 2^12280321871 is an apocalyptic number.

12280321871 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280321871 is an equidigital number, since it uses as much as digits as its factorization.

12280321871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 12280321871 in words is "twelve billion, two hundred eighty million, three hundred twenty-one thousand, eight hundred seventy-one".