135132121 has 2 divisors, whose sum is σ = 135132122. Its totient is φ = 135132120.

The previous prime is 135132091. The next prime is 135132149. The reversal of 135132121 is 121231531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 50694400 = 9189^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 135132121 - 2⁵ = 135132089 is a prime.

It is not a weakly prime, because it can be changed into another prime (135132181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67566060 + 67566061.

It is an arithmetic number, because the mean of its divisors is an integer number (67566061).

Almost surely, 2^135132121 is an apocalyptic number.

It is an amenable number.

135132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

135132121 is an equidigital number, since it uses as much as digits as its factorization.

135132121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 135132121 is about 11624.6342308049. The cubic root of 135132121 is about 513.1600803513.

Adding to 135132121 its reverse (121231531), we get a palindrome (256363652).

The spelling of 135132121 in words is "one hundred thirty-five million, one hundred thirty-two thousand, one hundred twenty-one".