2166122321606 has 16 divisors (see below), whose sum is σ = 3283886860800. Its totient is φ = 1071513611208.

The previous prime is 2166122321591. The next prime is 2166122321617. The reversal of 2166122321606 is 6061232216612.

It is a self number, because there is not a number n which added to its sum of digits gives 2166122321606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4846196 + ... + 5274263.

It is an arithmetic number, because the mean of its divisors is an integer number (205242928800).

Almost surely, 2^{2166122321606} is an apocalyptic number.

2166122321606 is a deficient number, since it is larger than the sum of its proper divisors (1117764539194).

2166122321606 is a wasteful number, since it uses less digits than its factorization.

2166122321606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121603.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 2166122321606 in words is "two trillion, one hundred sixty-six billion, one hundred twenty-two million, three hundred twenty-one thousand, six hundred six".