2213271845 has 8 divisors (see below), whose sum is σ = 2699466360. Its totient is φ = 1741590720.

The previous prime is 2213271839. The next prime is 2213271887. The reversal of 2213271845 is 5481723122.

It can be written as a sum of positive squares in 4 ways, for example, as 119202724 + 2094069121 = 10918^2 + 45761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2213271845 - 2²⁸ = 1944836389 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 3628010 + ... + 3628619.

It is an arithmetic number, because the mean of its divisors is an integer number (337433295).

Almost surely, 2^2213271845 is an apocalyptic number.

It is an amenable number.

2213271845 is a deficient number, since it is larger than the sum of its proper divisors (486194515).

2213271845 is an equidigital number, since it uses as much as digits as its factorization.

2213271845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7256695.

The product of its digits is 26880, while the sum is 35.

The square root of 2213271845 is about 47045.4232099149. The cubic root of 2213271845 is about 1303.2015458758.

Adding to 2213271845 its reverse (5481723122), we get a palindrome (7694994967).

The spelling of 2213271845 in words is "two billion, two hundred thirteen million, two hundred seventy-one thousand, eight hundred forty-five".