1123203200321 has 2 divisors, whose sum is σ = 1123203200322. Its totient is φ = 1123203200320.

The previous prime is 1123203200311. The next prime is 1123203200341. The reversal of 1123203200321 is 1230023023211.

It is an a-pointer prime, because the next prime (1123203200341) can be obtained adding 1123203200321 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674656890625 + 448546309696 = 821375^2 + 669736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123203200321 - 2¹⁰ = 1123203199297 is a prime.

It is a super-2 number, since 2×1123203200321² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123203200293 and 1123203200302.

It is not a weakly prime, because it can be changed into another prime (1123203200311) 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, 561601600160 + 561601600161.

It is an arithmetic number, because the mean of its divisors is an integer number (561601600161).

Almost surely, 2^{1123203200321} is an apocalyptic number.

It is an amenable number.

1123203200321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123203200321 is an equidigital number, since it uses as much as digits as its factorization.

1123203200321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1123203200321 its reverse (1230023023211), we get a palindrome (2353226223532).

The spelling of 1123203200321 in words is "one trillion, one hundred twenty-three billion, two hundred three million, two hundred thousand, three hundred twenty-one".