12021312271 has 2 divisors, whose sum is σ = 12021312272. Its totient is φ = 12021312270.

The previous prime is 12021312269. The next prime is 12021312301. The reversal of 12021312271 is 17221312021.

12021312271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021312271 - 2¹ = 12021312269 is a prime.

Together with 12021312269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021312371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010656135 + 6010656136.

It is an arithmetic number, because the mean of its divisors is an integer number (6010656136).

Almost surely, 2^12021312271 is an apocalyptic number.

12021312271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021312271 is an equidigital number, since it uses as much as digits as its factorization.

12021312271 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 12021312271 its reverse (17221312021), we get a palindrome (29242624292).

The spelling of 12021312271 in words is "twelve billion, twenty-one million, three hundred twelve thousand, two hundred seventy-one".