170611121 has 4 divisors (see below), whose sum is σ = 171050100. Its totient is φ = 170172144.

The previous prime is 170611097. The next prime is 170611123. The reversal of 170611121 is 121116071.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121116071 = 829 ⋅146099.

It can be written as a sum of positive squares in 2 ways, for example, as 108910096 + 61701025 = 10436^2 + 7855^2 .

It is a cyclic number.

It is not a de Polignac number, because 170611121 - 2¹⁸ = 170348977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170611093 and 170611102.

It is not an unprimeable number, because it can be changed into a prime (170611123) 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, 218906 + ... + 219683.

It is an arithmetic number, because the mean of its divisors is an integer number (42762525).

Almost surely, 2^170611121 is an apocalyptic number.

It is an amenable number.

170611121 is a deficient number, since it is larger than the sum of its proper divisors (438979).

170611121 is an equidigital number, since it uses as much as digits as its factorization.

170611121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438978.

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 170611121 is about 13061.8192071396. The cubic root of 170611121 is about 554.6288360537.

Adding to 170611121 its reverse (121116071), we get a palindrome (291727192).

The spelling of 170611121 in words is "one hundred seventy million, six hundred eleven thousand, one hundred twenty-one".