1113132121 has 2 divisors, whose sum is σ = 1113132122. Its totient is φ = 1113132120.

The previous prime is 1113132113. The next prime is 1113132169. The reversal of 1113132121 is 1212313111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809118025 + 304014096 = 28445^2 + 17436^2 .

It is an emirp because it is prime and its reverse (1212313111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1113132121 - 2³ = 1113132113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113132095 and 1113132104.

It is not a weakly prime, because it can be changed into another prime (1113132101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556566060 + 556566061.

It is an arithmetic number, because the mean of its divisors is an integer number (556566061).

Almost surely, 2^1113132121 is an apocalyptic number.

It is an amenable number.

1113132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113132121 is an equidigital number, since it uses as much as digits as its factorization.

1113132121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 16.

The square root of 1113132121 is about 33363.6347090661. The cubic root of 1113132121 is about 1036.3717630548.

Adding to 1113132121 its reverse (1212313111), we get a palindrome (2325445232).

The spelling of 1113132121 in words is "one billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred twenty-one".