166711122 has 96 divisors (see below), whose sum is σ = 393050112. Its totient is φ = 52907904.

The previous prime is 166711121. The next prime is 166711157. The reversal of 166711122 is 221117661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (166711121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1312623 + ... + 1312749.

It is an arithmetic number, because the mean of its divisors is an integer number (4094272).

Almost surely, 2^166711122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166711122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196525056).

166711122 is an abundant number, since it is smaller than the sum of its proper divisors (226338990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166711122 is a wasteful number, since it uses less digits than its factorization.

166711122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 242 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 166711122 is about 12911.6661202186. Note that the first 3 decimals coincide. The cubic root of 166711122 is about 550.3701332249.

Adding to 166711122 its reverse (221117661), we get a palindrome (387828783).

The spelling of 166711122 in words is "one hundred sixty-six million, seven hundred eleven thousand, one hundred twenty-two".