166017122 has 4 divisors (see below), whose sum is σ = 249025686. Its totient is φ = 83008560.

The previous prime is 166017097. The next prime is 166017127. The reversal of 166017122 is 221710661.

166017122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221710661 = 61 ⋅3634601.

It can be written as a sum of positive squares in only one way, i.e., 157728481 + 8288641 = 12559^2 + 2879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166017091 and 166017100.

It is not an unprimeable number, because it can be changed into a prime (166017127) 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 as a sum of consecutive naturals, namely, 41504279 + ... + 41504282.

Almost surely, 2^166017122 is an apocalyptic number.

166017122 is a deficient number, since it is larger than the sum of its proper divisors (83008564).

166017122 is an equidigital number, since it uses as much as digits as its factorization.

166017122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83008563.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 166017122 is about 12884.7631720571. The cubic root of 166017122 is about 549.6053609813.

Adding to 166017122 its reverse (221710661), we get a palindrome (387727783).

The spelling of 166017122 in words is "one hundred sixty-six million, seventeen thousand, one hundred twenty-two".