201605106220 has 48 divisors (see below), whose sum is σ = 483928119360. Its totient is φ = 69110913024.

The previous prime is 201605106217. The next prime is 201605106259. The reversal of 201605106220 is 22601506102.

201605106220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810052 + ... + 1029268.

It is an arithmetic number, because the mean of its divisors is an integer number (10081835820).

Almost surely, 2^201605106220 is an apocalyptic number.

201605106220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201605106220 is an abundant number, since it is smaller than the sum of its proper divisors (282323013140).

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

201605106220 is a wasteful number, since it uses less digits than its factorization.

201605106220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225802 (or 225800 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 201605106220 in words is "two hundred one billion, six hundred five million, one hundred six thousand, two hundred twenty".