1121230320251 has 2 divisors, whose sum is σ = 1121230320252. Its totient is φ = 1121230320250.

The previous prime is 1121230320137. The next prime is 1121230320311. The reversal of 1121230320251 is 1520230321211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121230320251 - 2¹⁸ = 1121230058107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121230320851) 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, 560615160125 + 560615160126.

It is an arithmetic number, because the mean of its divisors is an integer number (560615160126).

Almost surely, 2^{1121230320251} is an apocalyptic number.

1121230320251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121230320251 is an equidigital number, since it uses as much as digits as its factorization.

1121230320251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1121230320251 its reverse (1520230321211), we get a palindrome (2641460641462).

The spelling of 1121230320251 in words is "one trillion, one hundred twenty-one billion, two hundred thirty million, three hundred twenty thousand, two hundred fifty-one".