12621242167 has 2 divisors, whose sum is σ = 12621242168. Its totient is φ = 12621242166.

The previous prime is 12621242159. The next prime is 12621242173. The reversal of 12621242167 is 76124212621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12621242167 - 2³ = 12621242159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12621242107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6310621083 + 6310621084.

It is an arithmetic number, because the mean of its divisors is an integer number (6310621084).

Almost surely, 2^12621242167 is an apocalyptic number.

12621242167 is a deficient number, since it is larger than the sum of its proper divisors (1).

12621242167 is an equidigital number, since it uses as much as digits as its factorization.

12621242167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

Adding to 12621242167 its reverse (76124212621), we get a palindrome (88745454788).

The spelling of 12621242167 in words is "twelve billion, six hundred twenty-one million, two hundred forty-two thousand, one hundred sixty-seven".