12722267869 has 4 divisors (see below), whose sum is σ = 12738986460. Its totient is φ = 12705549280.

The previous prime is 12722267867. The next prime is 12722267879. The reversal of 12722267869 is 96876222721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96876222721 = 281 ⋅344755241.

It can be written as a sum of positive squares in 2 ways, for example, as 2392188100 + 10330079769 = 48910^2 + 101637^2 .

It is a cyclic number.

It is not a de Polignac number, because 12722267869 - 2¹ = 12722267867 is a prime.

It is a super-2 number, since 2×12722267869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722267861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8358154 + ... + 8359675.

It is an arithmetic number, because the mean of its divisors is an integer number (3184746615).

Almost surely, 2^12722267869 is an apocalyptic number.

It is an amenable number.

12722267869 is a deficient number, since it is larger than the sum of its proper divisors (16718591).

12722267869 is an equidigital number, since it uses as much as digits as its factorization.

12722267869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16718590.

The product of its digits is 2032128, while the sum is 52.

The spelling of 12722267869 in words is "twelve billion, seven hundred twenty-two million, two hundred sixty-seven thousand, eight hundred sixty-nine".