212321223313 has 12 divisors (see below), whose sum is σ = 224108810100. Its totient is φ = 201124306656.

The previous prime is 212321223311. The next prime is 212321223349. The reversal of 212321223313 is 313322123212.

It can be written as a sum of positive squares in 2 ways, for example, as 49950909009 + 162370314304 = 223497^2 + 402952^2 .

It is not a de Polignac number, because 212321223313 - 2¹ = 212321223311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212321223311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3925731 + ... + 3979447.

It is an arithmetic number, because the mean of its divisors is an integer number (18675734175).

Almost surely, 2^212321223313 is an apocalyptic number.

It is an amenable number.

212321223313 is a deficient number, since it is larger than the sum of its proper divisors (11787586787).

212321223313 is a wasteful number, since it uses less digits than its factorization.

212321223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64704 (or 64685 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 212321223313 its reverse (313322123212), we get a palindrome (525643346525).

The spelling of 212321223313 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred twenty-three thousand, three hundred thirteen".