11122431121 has 2 divisors, whose sum is σ = 11122431122. Its totient is φ = 11122431120.

The previous prime is 11122431113. The next prime is 11122431143. The reversal of 11122431121 is 12113422111.

11122431121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11059466896 + 62964225 = 105164^2 + 7935^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122431121 - 2³ = 11122431113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11122431421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561215560 + 5561215561.

It is an arithmetic number, because the mean of its divisors is an integer number (5561215561).

Almost surely, 2^11122431121 is an apocalyptic number.

It is an amenable number.

11122431121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122431121 is an equidigital number, since it uses as much as digits as its factorization.

11122431121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 19.

Adding to 11122431121 its reverse (12113422111), we get a palindrome (23235853232).

The spelling of 11122431121 in words is "eleven billion, one hundred twenty-two million, four hundred thirty-one thousand, one hundred twenty-one".