12287223081 has 24 divisors (see below), whose sum is σ = 20287177664. Its totient is φ = 7020056160.

The previous prime is 12287223077. The next prime is 12287223089. The reversal of 12287223081 is 18032278221.

It is not a de Polignac number, because 12287223081 - 2² = 12287223077 is a prime.

It is a super-2 number, since 2×12287223081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12287223089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453735 + ... + 480051.

Almost surely, 2^12287223081 is an apocalyptic number.

It is an amenable number.

12287223081 is a deficient number, since it is larger than the sum of its proper divisors (7999954583).

12287223081 is a wasteful number, since it uses less digits than its factorization.

12287223081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33741 (or 33738 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 12287223081 in words is "twelve billion, two hundred eighty-seven million, two hundred twenty-three thousand, eighty-one".