2005002220172 has 12 divisors (see below), whose sum is σ = 4010004440400. Its totient is φ = 859286665776.

The previous prime is 2005002220171. The next prime is 2005002220237. The reversal of 2005002220172 is 2710222005002.

2005002220172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2005002220171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35803611047 + ... + 35803611102.

It is an arithmetic number, because the mean of its divisors is an integer number (334167036700).

Almost surely, 2^{2005002220172} is an apocalyptic number.

It is an amenable number.

2005002220172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2005002220172 is a wasteful number, since it uses less digits than its factorization.

2005002220172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71607222160 (or 71607222158 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 2005002220172 its reverse (2710222005002), we get a palindrome (4715224225174).

The spelling of 2005002220172 in words is "two trillion, five billion, two million, two hundred twenty thousand, one hundred seventy-two".