11123234321 has 2 divisors, whose sum is σ = 11123234322. Its totient is φ = 11123234320.

The previous prime is 11123234303. The next prime is 11123234389. The reversal of 11123234321 is 12343232111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7146166225 + 3977068096 = 84535^2 + 63064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123234321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123234021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561617160 + 5561617161.

It is an arithmetic number, because the mean of its divisors is an integer number (5561617161).

Almost surely, 2^11123234321 is an apocalyptic number.

It is an amenable number.

11123234321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123234321 is an equidigital number, since it uses as much as digits as its factorization.

11123234321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 11123234321 its reverse (12343232111), we get a palindrome (23466466432).

The spelling of 11123234321 in words is "eleven billion, one hundred twenty-three million, two hundred thirty-four thousand, three hundred twenty-one".