1121231231441 has 2 divisors, whose sum is σ = 1121231231442. Its totient is φ = 1121231231440.

The previous prime is 1121231231437. The next prime is 1121231231447. The reversal of 1121231231441 is 1441321321211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623365516225 + 497865715216 = 789535^2 + 705596^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121231231441 - 2² = 1121231231437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121231231441.

It is not a weakly prime, because it can be changed into another prime (1121231231447) 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, 560615615720 + 560615615721.

It is an arithmetic number, because the mean of its divisors is an integer number (560615615721).

Almost surely, 2^{1121231231441} is an apocalyptic number.

It is an amenable number.

1121231231441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121231231441 is an equidigital number, since it uses as much as digits as its factorization.

1121231231441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

Adding to 1121231231441 its reverse (1441321321211), we get a palindrome (2562552552652).

The spelling of 1121231231441 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty-one thousand, four hundred forty-one".