12312011227 has 2 divisors, whose sum is σ = 12312011228. Its totient is φ = 12312011226.

The previous prime is 12312011221. The next prime is 12312011281. The reversal of 12312011227 is 72211021321.

It is a weak prime.

It is an emirp because it is prime and its reverse (72211021321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312011227 - 2¹⁹ = 12311486939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12312011198 and 12312011207.

It is not a weakly prime, because it can be changed into another prime (12312011221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156005613 + 6156005614.

It is an arithmetic number, because the mean of its divisors is an integer number (6156005614).

Almost surely, 2^12312011227 is an apocalyptic number.

12312011227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312011227 is an equidigital number, since it uses as much as digits as its factorization.

12312011227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12312011227 its reverse (72211021321), we get a palindrome (84523032548).

The spelling of 12312011227 in words is "twelve billion, three hundred twelve million, eleven thousand, two hundred twenty-seven".