12134012221 has 2 divisors, whose sum is σ = 12134012222. Its totient is φ = 12134012220.

The previous prime is 12134012203. The next prime is 12134012239. The reversal of 12134012221 is 12221043121.

It is a balanced prime because it is at equal distance from previous prime (12134012203) and next prime (12134012239).

It can be written as a sum of positive squares in only one way, i.e., 10198980100 + 1935032121 = 100990^2 + 43989^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134012221 - 2⁹ = 12134011709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12134012291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067006110 + 6067006111.

It is an arithmetic number, because the mean of its divisors is an integer number (6067006111).

Almost surely, 2^12134012221 is an apocalyptic number.

It is an amenable number.

12134012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12134012221 is an equidigital number, since it uses as much as digits as its factorization.

12134012221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12134012221 its reverse (12221043121), we get a palindrome (24355055342).

The spelling of 12134012221 in words is "twelve billion, one hundred thirty-four million, twelve thousand, two hundred twenty-one".