2011220205 has 16 divisors (see below), whose sum is σ = 3387318720. Its totient is φ = 1016195328.

The previous prime is 2011220179. The next prime is 2011220219. The reversal of 2011220205 is 5020221102.

It is not a de Polignac number, because 2011220205 - 2⁸ = 2011219949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528172 + ... + 3528741.

It is an arithmetic number, because the mean of its divisors is an integer number (211707420).

Almost surely, 2^2011220205 is an apocalyptic number.

It is an amenable number.

2011220205 is a deficient number, since it is larger than the sum of its proper divisors (1376098515).

2011220205 is a wasteful number, since it uses less digits than its factorization.

2011220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056940.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2011220205 is about 44846.6298064860. The cubic root of 2011220205 is about 1262.2727530076.

Adding to 2011220205 its reverse (5020221102), we get a palindrome (7031441307).

The spelling of 2011220205 in words is "two billion, eleven million, two hundred twenty thousand, two hundred five".