12011010257 has 2 divisors, whose sum is σ = 12011010258. Its totient is φ = 12011010256.

The previous prime is 12011010199. The next prime is 12011010281. The reversal of 12011010257 is 75201011021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10184644561 + 1826365696 = 100919^2 + 42736^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011010257 - 2⁸ = 12011010001 is a prime.

It is a super-3 number, since 3×12011010257³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12011010457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005505128 + 6005505129.

It is an arithmetic number, because the mean of its divisors is an integer number (6005505129).

Almost surely, 2^12011010257 is an apocalyptic number.

It is an amenable number.

12011010257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011010257 is an equidigital number, since it uses as much as digits as its factorization.

12011010257 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 20.

Adding to 12011010257 its reverse (75201011021), we get a palindrome (87212021278).

The spelling of 12011010257 in words is "twelve billion, eleven million, ten thousand, two hundred fifty-seven".