12031221227 has 2 divisors, whose sum is σ = 12031221228. Its totient is φ = 12031221226.

The previous prime is 12031221203. The next prime is 12031221239. The reversal of 12031221227 is 72212213021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12031221227 - 2¹⁶ = 12031155691 is a prime.

It is not a weakly prime, because it can be changed into another prime (12031221277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015610613 + 6015610614.

It is an arithmetic number, because the mean of its divisors is an integer number (6015610614).

Almost surely, 2^12031221227 is an apocalyptic number.

12031221227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031221227 is an equidigital number, since it uses as much as digits as its factorization.

12031221227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 12031221227 its reverse (72212213021), we get a palindrome (84243434248).

The spelling of 12031221227 in words is "twelve billion, thirty-one million, two hundred twenty-one thousand, two hundred twenty-seven".