12957219 has 16 divisors (see below), whose sum is σ = 20941440. Its totient is φ = 7852680.

The previous prime is 12957209. The next prime is 12957223. The reversal of 12957219 is 91275921.

12957219 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12957219 - 2¹¹ = 12955171 is a prime.

It is a super-2 number, since 2×12957219² = 335779048427922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12957209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21517 + ... + 22110.

It is an arithmetic number, because the mean of its divisors is an integer number (1308840).

Almost surely, 2^12957219 is an apocalyptic number.

12957219 is a deficient number, since it is larger than the sum of its proper divisors (7984221).

12957219 is a wasteful number, since it uses less digits than its factorization.

12957219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43647 (or 43641 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 12957219 is about 3599.6137292771. The cubic root of 12957219 is about 234.8752559613.

The spelling of 12957219 in words is "twelve million, nine hundred fifty-seven thousand, two hundred nineteen".