12011257 has 2 divisors, whose sum is σ = 12011258. Its totient is φ = 12011256.

The previous prime is 12011243. The next prime is 12011281. The reversal of 12011257 is 75211021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8185321 + 3825936 = 2861^2 + 1956^2 .

It is an emirp because it is prime and its reverse (75211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011257 - 2¹¹ = 12009209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005628 + 6005629.

It is an arithmetic number, because the mean of its divisors is an integer number (6005629).

Almost surely, 2^12011257 is an apocalyptic number.

It is an amenable number.

12011257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011257 is an equidigital number, since it uses as much as digits as its factorization.

12011257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 12011257 is about 3465.7260422601. The cubic root of 12011257 is about 229.0144152936.

Adding to 12011257 its reverse (75211021), we get a palindrome (87222278).

The spelling of 12011257 in words is "twelve million, eleven thousand, two hundred fifty-seven".