2212123313 has 4 divisors (see below), whose sum is σ = 2215709220. Its totient is φ = 2208537408.

The previous prime is 2212123301. The next prime is 2212123321. The reversal of 2212123313 is 3133212122.

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 1207423504 + 1004699809 = 34748^2 + 31697^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212123313 - 2⁴ = 2212123297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212123343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792028 + ... + 1793261.

It is an arithmetic number, because the mean of its divisors is an integer number (553927305).

Almost surely, 2^2212123313 is an apocalyptic number.

It is an amenable number.

2212123313 is a deficient number, since it is larger than the sum of its proper divisors (3585907).

2212123313 is an equidigital number, since it uses as much as digits as its factorization.

2212123313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585906.

The product of its digits is 432, while the sum is 20.

The square root of 2212123313 is about 47033.2149974887. The cubic root of 2212123313 is about 1302.9760836396.

Adding to 2212123313 its reverse (3133212122), we get a palindrome (5345335435).

The spelling of 2212123313 in words is "two billion, two hundred twelve million, one hundred twenty-three thousand, three hundred thirteen".