1121222001257 has 2 divisors, whose sum is σ = 1121222001258. Its totient is φ = 1121222001256.

The previous prime is 1121222001197. The next prime is 1121222001269. The reversal of 1121222001257 is 7521002221211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1033101485056 + 88120516201 = 1016416^2 + 296851^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121222001257 - 2²⁸ = 1120953565801 is a prime.

It is a super-2 number, since 2×1121222001257² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121222001857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560611000628 + 560611000629.

It is an arithmetic number, because the mean of its divisors is an integer number (560611000629).

Almost surely, 2^{1121222001257} is an apocalyptic number.

It is an amenable number.

1121222001257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222001257 is an equidigital number, since it uses as much as digits as its factorization.

1121222001257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 1121222001257 its reverse (7521002221211), we get a palindrome (8642224222468).

The spelling of 1121222001257 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, one thousand, two hundred fifty-seven".