1123223441251 has 2 divisors, whose sum is σ = 1123223441252. Its totient is φ = 1123223441250.

The previous prime is 1123223441203. The next prime is 1123223441309. The reversal of 1123223441251 is 1521443223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123223441251 - 2⁹ = 1123223440739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123223441651) 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, 561611720625 + 561611720626.

It is an arithmetic number, because the mean of its divisors is an integer number (561611720626).

Almost surely, 2^{1123223441251} is an apocalyptic number.

1123223441251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123223441251 is an equidigital number, since it uses as much as digits as its factorization.

1123223441251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

Adding to 1123223441251 its reverse (1521443223211), we get a palindrome (2644666664462).

The spelling of 1123223441251 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, four hundred forty-one thousand, two hundred fifty-one".