11121102257 has 2 divisors, whose sum is σ = 11121102258. Its totient is φ = 11121102256.

The previous prime is 11121102241. The next prime is 11121102263. The reversal of 11121102257 is 75220112111.

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., 10899568801 + 221533456 = 104401^2 + 14884^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121102257 - 2⁴ = 11121102241 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121102217) 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, 5560551128 + 5560551129.

It is an arithmetic number, because the mean of its divisors is an integer number (5560551129).

Almost surely, 2^11121102257 is an apocalyptic number.

It is an amenable number.

11121102257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121102257 is an equidigital number, since it uses as much as digits as its factorization.

11121102257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 11121102257 its reverse (75220112111), we get a palindrome (86341214368).

The spelling of 11121102257 in words is "eleven billion, one hundred twenty-one million, one hundred two thousand, two hundred fifty-seven".