12642422269 has 2 divisors, whose sum is σ = 12642422270. Its totient is φ = 12642422268.

The previous prime is 12642422231. The next prime is 12642422311. The reversal of 12642422269 is 96222424621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12535713369 + 106708900 = 111963^2 + 10330^2 .

It is a cyclic number.

It is not a de Polignac number, because 12642422269 - 2¹⁷ = 12642291197 is a prime.

It is a super-2 number, since 2×12642422269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642422069) 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, 6321211134 + 6321211135.

It is an arithmetic number, because the mean of its divisors is an integer number (6321211135).

Almost surely, 2^12642422269 is an apocalyptic number.

It is an amenable number.

12642422269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642422269 is an equidigital number, since it uses as much as digits as its factorization.

12642422269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The spelling of 12642422269 in words is "twelve billion, six hundred forty-two million, four hundred twenty-two thousand, two hundred sixty-nine".