12812219 has 8 divisors (see below), whose sum is σ = 15279360. Its totient is φ = 10504296.

The previous prime is 12812197. The next prime is 12812227. The reversal of 12812219 is 91221821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12812219 is a prime.

It is a super-2 number, since 2×12812219² = 328305911407922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12812119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39629 + ... + 39950.

It is an arithmetic number, because the mean of its divisors is an integer number (1909920).

Almost surely, 2^12812219 is an apocalyptic number.

12812219 is a deficient number, since it is larger than the sum of its proper divisors (2467141).

12812219 is an equidigital number, since it uses as much as digits as its factorization.

12812219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79609.

The product of its digits is 576, while the sum is 26.

The square root of 12812219 is about 3579.4160138212. The cubic root of 12812219 is about 233.9958299108.

It can be divided in two parts, 12812 and 219, that added together give a palindrome (13031).

The spelling of 12812219 in words is "twelve million, eight hundred twelve thousand, two hundred nineteen".