12422287 has 2 divisors, whose sum is σ = 12422288. Its totient is φ = 12422286.

The previous prime is 12422281. The next prime is 12422309. The reversal of 12422287 is 78222421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12422287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12422281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211143 + 6211144.

It is an arithmetic number, because the mean of its divisors is an integer number (6211144).

Almost surely, 2^12422287 is an apocalyptic number.

12422287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12422287 is an equidigital number, since it uses as much as digits as its factorization.

12422287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 28.

The square root of 12422287 is about 3524.5264930200. The cubic root of 12422287 is about 231.5974924733.

The spelling of 12422287 in words is "twelve million, four hundred twenty-two thousand, two hundred eighty-seven".