166122203 has 8 divisors (see below), whose sum is σ = 179902800. Its totient is φ = 152484768.

The previous prime is 166122191. The next prime is 166122247. The reversal of 166122203 is 302221661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166122203 - 2⁶ = 166122139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166122293) 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 7 ways as a sum of consecutive naturals, for example, 33368 + ... + 38021.

It is an arithmetic number, because the mean of its divisors is an integer number (22487850).

Almost surely, 2^166122203 is an apocalyptic number.

166122203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166122203 is a deficient number, since it is larger than the sum of its proper divisors (13780597).

166122203 is a wasteful number, since it uses less digits than its factorization.

166122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71581.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 166122203 is about 12888.8402503872. The cubic root of 166122203 is about 549.7212946062.

Adding to 166122203 its reverse (302221661), we get a palindrome (468343864).

The spelling of 166122203 in words is "one hundred sixty-six million, one hundred twenty-two thousand, two hundred three".