12274321 has 2 divisors, whose sum is σ = 12274322. Its totient is φ = 12274320.

The previous prime is 12274319. The next prime is 12274331. The reversal of 12274321 is 12347221.

12274321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 2446096 = 3135^2 + 1564^2 .

It is an emirp because it is prime and its reverse (12347221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12274321 - 2¹ = 12274319 is a prime.

It is a super-2 number, since 2×12274321² = 301317912022082, which contains 22 as substring.

Together with 12274319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12274292 and 12274301.

It is not a weakly prime, because it can be changed into another prime (12274331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6137160 + 6137161.

It is an arithmetic number, because the mean of its divisors is an integer number (6137161).

Almost surely, 2^12274321 is an apocalyptic number.

It is an amenable number.

12274321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12274321 is an equidigital number, since it uses as much as digits as its factorization.

12274321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 12274321 is about 3503.4727057592. The cubic root of 12274321 is about 230.6742721476.

Subtracting 12274321 from its reverse (12347221), we obtain a square (72900 = 270²).

The spelling of 12274321 in words is "twelve million, two hundred seventy-four thousand, three hundred twenty-one".