11123102321 has 2 divisors, whose sum is σ = 11123102322. Its totient is φ = 11123102320.

The previous prime is 11123102299. The next prime is 11123102327. The reversal of 11123102321 is 12320132111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9041917921 + 2081184400 = 95089^2 + 45620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123102321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11123102321.

It is not a weakly prime, because it can be changed into another prime (11123102327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561551160 + 5561551161.

It is an arithmetic number, because the mean of its divisors is an integer number (5561551161).

Almost surely, 2^11123102321 is an apocalyptic number.

It is an amenable number.

11123102321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123102321 is an equidigital number, since it uses as much as digits as its factorization.

11123102321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11123102321 its reverse (12320132111), we get a palindrome (23443234432).

The spelling of 11123102321 in words is "eleven billion, one hundred twenty-three million, one hundred two thousand, three hundred twenty-one".