9135121 has 2 divisors, whose sum is σ = 9135122. Its totient is φ = 9135120.

The previous prime is 9135109. The next prime is 9135127. The reversal of 9135121 is 1215319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 1904400 = 2689^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 9135121 - 2¹¹ = 9133073 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9135092 and 9135101.

It is not a weakly prime, because it can be changed into another prime (9135127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4567560 + 4567561.

It is an arithmetic number, because the mean of its divisors is an integer number (4567561).

Almost surely, 2^9135121 is an apocalyptic number.

It is an amenable number.

9135121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9135121 is an equidigital number, since it uses as much as digits as its factorization.

9135121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 9135121 is about 3022.4362689724. The cubic root of 9135121 is about 209.0441898884.

The spelling of 9135121 in words is "nine million, one hundred thirty-five thousand, one hundred twenty-one".