11113224121 has 2 divisors, whose sum is σ = 11113224122. Its totient is φ = 11113224120.

The previous prime is 11113224113. The next prime is 11113224163. The reversal of 11113224121 is 12142231111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7825348521 + 3287875600 = 88461^2 + 57340^2 .

It is a cyclic number.

It is not a de Polignac number, because 11113224121 - 2³ = 11113224113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11113224191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556612060 + 5556612061.

It is an arithmetic number, because the mean of its divisors is an integer number (5556612061).

Almost surely, 2^11113224121 is an apocalyptic number.

It is an amenable number.

11113224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11113224121 is an equidigital number, since it uses as much as digits as its factorization.

11113224121 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 11113224121 its reverse (12142231111), we get a palindrome (23255455232).

The spelling of 11113224121 in words is "eleven billion, one hundred thirteen million, two hundred twenty-four thousand, one hundred twenty-one".