12729221313 has 8 divisors (see below), whose sum is σ = 16974017376. Its totient is φ = 8485286400.

The previous prime is 12729221273. The next prime is 12729221317. The reversal of 12729221313 is 31312292721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12729221313 - 2¹² = 12729217217 is a prime.

It is a super-3 number, since 3×12729221313³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12729221317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179968 + ... + 240513.

It is an arithmetic number, because the mean of its divisors is an integer number (2121752172).

Almost surely, 2^12729221313 is an apocalyptic number.

It is an amenable number.

12729221313 is a deficient number, since it is larger than the sum of its proper divisors (4244796063).

12729221313 is a wasteful number, since it uses less digits than its factorization.

12729221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430575.

The product of its digits is 9072, while the sum is 33.

The spelling of 12729221313 in words is "twelve billion, seven hundred twenty-nine million, two hundred twenty-one thousand, three hundred thirteen".