11121212001257 has 2 divisors, whose sum is σ = 11121212001258. Its totient is φ = 11121212001256.

The previous prime is 11121212001149. The next prime is 11121212001269. The reversal of 11121212001257 is 75210021212111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11096287169881 + 24924831376 = 3331109^2 + 157876^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121212001257 - 2¹⁴ = 11121211984873 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121212001457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560606000628 + 5560606000629.

It is an arithmetic number, because the mean of its divisors is an integer number (5560606000629).

Almost surely, 2^{11121212001257} is an apocalyptic number.

It is an amenable number.

11121212001257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121212001257 is an equidigital number, since it uses as much as digits as its factorization.

11121212001257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 26.

Adding to 11121212001257 its reverse (75210021212111), we get a palindrome (86331233213368).

The spelling of 11121212001257 in words is "eleven trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, two hundred fifty-seven".