11123311210321 has 2 divisors, whose sum is σ = 11123311210322. Its totient is φ = 11123311210320.

The previous prime is 11123311210309. The next prime is 11123311210327. The reversal of 11123311210321 is 12301211332111.

11123311210321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10860742078096 + 262569132225 = 3295564^2 + 512415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123311210321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11123311210292 and 11123311210301.

It is not a weakly prime, because it can be changed into another prime (11123311210327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561655605160 + 5561655605161.

It is an arithmetic number, because the mean of its divisors is an integer number (5561655605161).

Almost surely, 2^{11123311210321} is an apocalyptic number.

It is an amenable number.

11123311210321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123311210321 is an equidigital number, since it uses as much as digits as its factorization.

11123311210321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11123311210321 its reverse (12301211332111), we get a palindrome (23424522542432).

The spelling of 11123311210321 in words is "eleven trillion, one hundred twenty-three billion, three hundred eleven million, two hundred ten thousand, three hundred twenty-one".