2101220170 has 16 divisors (see below), whose sum is σ = 4322510208. Its totient is φ = 720418320.

The previous prime is 2101220167. The next prime is 2101220171. The reversal of 2101220170 is 710221012.

It is not an unprimeable number, because it can be changed into a prime (2101220171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15008646 + ... + 15008785.

It is an arithmetic number, because the mean of its divisors is an integer number (270156888).

Almost surely, 2^2101220170 is an apocalyptic number.

2101220170 is an abundant number, since it is smaller than the sum of its proper divisors (2221290038).

2101220170 is a wasteful number, since it uses less digits than its factorization.

2101220170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30017445.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2101220170 is about 45839.0681624311. The cubic root of 2101220170 is about 1280.8271366940.

Adding to 2101220170 its reverse (710221012), we get a palindrome (2811441182).

The spelling of 2101220170 in words is "two billion, one hundred one million, two hundred twenty thousand, one hundred seventy".