12722798109 has 36 divisors (see below), whose sum is σ = 20226751872. Its totient is φ = 7092711360.

The previous prime is 12722798087. The next prime is 12722798117. The reversal of 12722798109 is 90189722721.

It is a happy number.

It is not a de Polignac number, because 12722798109 - 2²⁰ = 12721749533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722798149) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 221364 + ... + 272850.

Almost surely, 2^12722798109 is an apocalyptic number.

It is an amenable number.

12722798109 is a deficient number, since it is larger than the sum of its proper divisors (7503953763).

12722798109 is an equidigital number, since it uses as much as digits as its factorization.

12722798109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51586 (or 51538 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 12722798109 in words is "twelve billion, seven hundred twenty-two million, seven hundred ninety-eight thousand, one hundred nine".