2220712205 has 4 divisors (see below), whose sum is σ = 2664854652. Its totient is φ = 1776569760.

The previous prime is 2220712181. The next prime is 2220712217. The reversal of 2220712205 is 5022170222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1336779844 + 883932361 = 36562^2 + 29731^2 .

It is not a de Polignac number, because 2220712205 - 2⁶ = 2220712141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222071216 + ... + 222071225.

It is an arithmetic number, because the mean of its divisors is an integer number (666213663).

Almost surely, 2^2220712205 is an apocalyptic number.

It is an amenable number.

2220712205 is a deficient number, since it is larger than the sum of its proper divisors (444142447).

2220712205 is an equidigital number, since it uses as much as digits as its factorization.

2220712205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444142446.

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

The square root of 2220712205 is about 47124.4332061405. The cubic root of 2220712205 is about 1304.6602375376.

Adding to 2220712205 its reverse (5022170222), we get a palindrome (7242882427).

The spelling of 2220712205 in words is "two billion, two hundred twenty million, seven hundred twelve thousand, two hundred five".