135321121 has 8 divisors (see below), whose sum is σ = 152066880. Its totient is φ = 119480592.

The previous prime is 135321103. The next prime is 135321149. The reversal of 135321121 is 121123531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135321121 - 2⁹ = 135320609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135321181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225991 + ... + 226588.

It is an arithmetic number, because the mean of its divisors is an integer number (19008360).

Almost surely, 2^135321121 is an apocalyptic number.

It is an amenable number.

135321121 is a deficient number, since it is larger than the sum of its proper divisors (16745759).

135321121 is a wasteful number, since it uses less digits than its factorization.

135321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452615.

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

The square root of 135321121 is about 11632.7606783601. The cubic root of 135321121 is about 513.3992094671.

Adding to 135321121 its reverse (121123531), we get a palindrome (256444652).

The spelling of 135321121 in words is "one hundred thirty-five million, three hundred twenty-one thousand, one hundred twenty-one".