2205170000 has 100 divisors (see below), whose sum is σ = 5824585536. Its totient is φ = 801840000.

The previous prime is 2205169997. The next prime is 2205170041. The reversal of 2205170000 is 715022.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99977 + ... + 120023.

Almost surely, 2^2205170000 is an apocalyptic number.

2205170000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205170000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2912292768).

2205170000 is an abundant number, since it is smaller than the sum of its proper divisors (3619415536).

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

2205170000 is a wasteful number, since it uses less digits than its factorization.

2205170000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20086 (or 20065 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 2205170000 is about 46959.2376428749. The cubic root of 2205170000 is about 1301.6094464677.

Adding to 2205170000 its reverse (715022), we get a palindrome (2205885022).

The spelling of 2205170000 in words is "two billion, two hundred five million, one hundred seventy thousand".