12134367221 has 2 divisors, whose sum is σ = 12134367222. Its totient is φ = 12134367220.

The previous prime is 12134367211. The next prime is 12134367263. The reversal of 12134367221 is 12276343121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12094500625 + 39866596 = 109975^2 + 6314^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134367221 - 2²² = 12130172917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12134367211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067183610 + 6067183611.

It is an arithmetic number, because the mean of its divisors is an integer number (6067183611).

Almost surely, 2^12134367221 is an apocalyptic number.

It is an amenable number.

12134367221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12134367221 is an equidigital number, since it uses as much as digits as its factorization.

12134367221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The spelling of 12134367221 in words is "twelve billion, one hundred thirty-four million, three hundred sixty-seven thousand, two hundred twenty-one".