170210116221 has 4 divisors (see below), whose sum is σ = 226946821632. Its totient is φ = 113473410812.

The previous prime is 170210116213. The next prime is 170210116247. The reversal of 170210116221 is 122611012071.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122611012071 = 3 ⋅40870337357.

It is a cyclic number.

It is not a de Polignac number, because 170210116221 - 2³ = 170210116213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 170210116191 and 170210116200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170210116721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28368352701 + ... + 28368352706.

It is an arithmetic number, because the mean of its divisors is an integer number (56736705408).

Almost surely, 2^170210116221 is an apocalyptic number.

It is an amenable number.

170210116221 is a deficient number, since it is larger than the sum of its proper divisors (56736705411).

170210116221 is an equidigital number, since it uses as much as digits as its factorization.

170210116221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56736705410.

The product of its (nonzero) digits is 336, while the sum is 24.

Adding to 170210116221 its reverse (122611012071), we get a palindrome (292821128292).

The spelling of 170210116221 in words is "one hundred seventy billion, two hundred ten million, one hundred sixteen thousand, two hundred twenty-one".