12287281337 has 4 divisors (see below), whose sum is σ = 12291120720. Its totient is φ = 12283441956.

The previous prime is 12287281333. The next prime is 12287281373. The reversal of 12287281337 is 73318278221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12287281337 - 2² = 12287281333 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12287281333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914887 + ... + 1921292.

It is an arithmetic number, because the mean of its divisors is an integer number (3072780180).

Almost surely, 2^12287281337 is an apocalyptic number.

It is an amenable number.

12287281337 is a deficient number, since it is larger than the sum of its proper divisors (3839383).

12287281337 is an equidigital number, since it uses as much as digits as its factorization.

12287281337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839382.

The product of its digits is 225792, while the sum is 44.

The spelling of 12287281337 in words is "twelve billion, two hundred eighty-seven million, two hundred eighty-one thousand, three hundred thirty-seven".