135212166 has 20 divisors (see below), whose sum is σ = 302975772. Its totient is φ = 45070668.

The previous prime is 135212159. The next prime is 135212179. The reversal of 135212166 is 661212531.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 417160 + ... + 417483.

Almost surely, 2^135212166 is an apocalyptic number.

135212166 is an abundant number, since it is smaller than the sum of its proper divisors (167763606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135212166 is an equidigital number, since it uses as much as digits as its factorization.

135212166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834657 (or 834648 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 135212166 is about 11628.0766251345. The cubic root of 135212166 is about 513.2613831617.

Adding to 135212166 its reverse (661212531), we get a palindrome (796424697).

The spelling of 135212166 in words is "one hundred thirty-five million, two hundred twelve thousand, one hundred sixty-six".