12272287 has 2 divisors, whose sum is σ = 12272288. Its totient is φ = 12272286.

The previous prime is 12272269. The next prime is 12272303. The reversal of 12272287 is 78227221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12272287 - 2⁷ = 12272159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12272237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6136143 + 6136144.

It is an arithmetic number, because the mean of its divisors is an integer number (6136144).

Almost surely, 2^12272287 is an apocalyptic number.

12272287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12272287 is an equidigital number, since it uses as much as digits as its factorization.

12272287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 31.

The square root of 12272287 is about 3503.1824103235. The cubic root of 12272287 is about 230.6615296264.

The spelling of 12272287 in words is "twelve million, two hundred seventy-two thousand, two hundred eighty-seven".