1123203313213 has 2 divisors, whose sum is σ = 1123203313214. Its totient is φ = 1123203313212.

The previous prime is 1123203313189. The next prime is 1123203313307. The reversal of 1123203313213 is 3123133023211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709036413849 + 414166899364 = 842043^2 + 643558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123203313213 - 2¹⁷ = 1123203182141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123203313013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561601656606 + 561601656607.

It is an arithmetic number, because the mean of its divisors is an integer number (561601656607).

Almost surely, 2^{1123203313213} is an apocalyptic number.

It is an amenable number.

1123203313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123203313213 is an equidigital number, since it uses as much as digits as its factorization.

1123203313213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1123203313213 its reverse (3123133023211), we get a palindrome (4246336336424).

The spelling of 1123203313213 in words is "one trillion, one hundred twenty-three billion, two hundred three million, three hundred thirteen thousand, two hundred thirteen".