166221410224122 has 48 divisors (see below), whose sum is σ = 393003520284960. Its totient is φ = 50355181917600.

The previous prime is 166221410224099. The next prime is 166221410224139. The reversal of 166221410224122 is 221422014122661.

166221410224122 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 2 + 1 + 410 + 224 + 12 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123850797 + ... + 125185712.

It is an arithmetic number, because the mean of its divisors is an integer number (8187573339270).

Almost surely, 2^{166221410224122} is an apocalyptic number.

166221410224122 is an abundant number, since it is smaller than the sum of its proper divisors (226782110060838).

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

166221410224122 is a wasteful number, since it uses less digits than its factorization.

166221410224122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249039899 (or 249039896 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

Adding to 166221410224122 its reverse (221422014122661), we get a palindrome (387643424346783).

The spelling of 166221410224122 in words is "one hundred sixty-six trillion, two hundred twenty-one billion, four hundred ten million, two hundred twenty-four thousand, one hundred twenty-two".