135221036 has 12 divisors (see below), whose sum is σ = 238849128. Its totient is φ = 66978432.

The previous prime is 135221033. The next prime is 135221063. The reversal of 135221036 is 630122531.

It is not an unprimeable number, because it can be changed into a prime (135221033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157541 + ... + 158396.

It is an arithmetic number, because the mean of its divisors is an integer number (19904094).

Almost surely, 2^135221036 is an apocalyptic number.

It is an amenable number.

135221036 is a deficient number, since it is larger than the sum of its proper divisors (103628092).

135221036 is a wasteful number, since it uses less digits than its factorization.

135221036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316048 (or 316046 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 135221036 is about 11628.4580233150. The cubic root of 135221036 is about 513.2726063356.

Adding to 135221036 its reverse (630122531), we get a palindrome (765343567).

The spelling of 135221036 in words is "one hundred thirty-five million, two hundred twenty-one thousand, thirty-six".