12134041021 has 2 divisors, whose sum is σ = 12134041022. Its totient is φ = 12134041020.

The previous prime is 12134041019. The next prime is 12134041147. The reversal of 12134041021 is 12014043121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8568279225 + 3565761796 = 92565^2 + 59714^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134041021 - 2¹ = 12134041019 is a prime.

Together with 12134041019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12134041021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12134041721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067020510 + 6067020511.

It is an arithmetic number, because the mean of its divisors is an integer number (6067020511).

Almost surely, 2^12134041021 is an apocalyptic number.

It is an amenable number.

12134041021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12134041021 is an equidigital number, since it uses as much as digits as its factorization.

12134041021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12134041021 its reverse (12014043121), we get a palindrome (24148084142).

The spelling of 12134041021 in words is "twelve billion, one hundred thirty-four million, forty-one thousand, twenty-one".