135216101 has 4 divisors (see below), whose sum is σ = 135240000. Its totient is φ = 135192204.

The previous prime is 135216083. The next prime is 135216127. The reversal of 135216101 is 101612531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135216101 - 2¹⁸ = 134953957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135206101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (33810000).

Almost surely, 2^135216101 is an apocalyptic number.

It is an amenable number.

135216101 is a deficient number, since it is larger than the sum of its proper divisors (23899).

135216101 is an equidigital number, since it uses as much as digits as its factorization.

135216101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23898.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 135216101 is about 11628.2458264349. The cubic root of 135216101 is about 513.2663621613.

Adding to 135216101 its reverse (101612531), we get a palindrome (236828632).

The spelling of 135216101 in words is "one hundred thirty-five million, two hundred sixteen thousand, one hundred one".