12282157 has 2 divisors, whose sum is σ = 12282158. Its totient is φ = 12282156.

The previous prime is 12282139. The next prime is 12282163. The reversal of 12282157 is 75128221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8874441 + 3407716 = 2979^2 + 1846^2 .

It is a cyclic number.

It is not a de Polignac number, because 12282157 - 2¹¹ = 12280109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12280157) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6141078 + 6141079.

It is an arithmetic number, because the mean of its divisors is an integer number (6141079).

Almost surely, 2^12282157 is an apocalyptic number.

It is an amenable number.

12282157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12282157 is an equidigital number, since it uses as much as digits as its factorization.

12282157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 28.

The square root of 12282157 is about 3504.5908463043. The cubic root of 12282157 is about 230.7233496507.

The spelling of 12282157 in words is "twelve million, two hundred eighty-two thousand, one hundred fifty-seven".