11123001435121 has 2 divisors, whose sum is σ = 11123001435122. Its totient is φ = 11123001435120.

The previous prime is 11123001435019. The next prime is 11123001435191. The reversal of 11123001435121 is 12153410032111.

11123001435121 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., 7267531738896 + 3855469696225 = 2695836^2 + 1963535^2 .

It is an emirp because it is prime and its reverse (12153410032111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123001435121 - 2²³ = 11122993046513 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123001435191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561500717560 + 5561500717561.

It is an arithmetic number, because the mean of its divisors is an integer number (5561500717561).

Almost surely, 2^{11123001435121} is an apocalyptic number.

It is an amenable number.

11123001435121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123001435121 is an equidigital number, since it uses as much as digits as its factorization.

11123001435121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 11123001435121 its reverse (12153410032111), we get a palindrome (23276411467232).

The spelling of 11123001435121 in words is "eleven trillion, one hundred twenty-three billion, one million, four hundred thirty-five thousand, one hundred twenty-one".