12271219 has 2 divisors, whose sum is σ = 12271220. Its totient is φ = 12271218.

The previous prime is 12271201. The next prime is 12271247. The reversal of 12271219 is 91217221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12271219 - 2²¹ = 10174067 is a prime.

It is a super-2 number, since 2×12271219² = 301165631491922, which contains 22 as substring.

It is equal to p₈₀₄₆₅₂ and since 12271219 and 804652 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12271193 and 12271202.

It is not a weakly prime, because it can be changed into another prime (12271279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135609 + 6135610.

It is an arithmetic number, because the mean of its divisors is an integer number (6135610).

Almost surely, 2^12271219 is an apocalyptic number.

12271219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12271219 is an equidigital number, since it uses as much as digits as its factorization.

12271219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 12271219 is about 3503.0299741795. The cubic root of 12271219 is about 230.6548382992.

The spelling of 12271219 in words is "twelve million, two hundred seventy-one thousand, two hundred nineteen".