212221033313 has 16 divisors (see below), whose sum is σ = 219140922000. Its totient is φ = 205437876480.

The previous prime is 212221033261. The next prime is 212221033319. The reversal of 212221033313 is 313330122212.

It can be written as a sum of positive squares in 8 ways, for example, as 84176577424 + 128044455889 = 290132^2 + 357833^2 .

It is a cyclic number.

It is not a de Polignac number, because 212221033313 - 2³² = 207926066017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221033319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883595 + ... + 1097807.

It is an arithmetic number, because the mean of its divisors is an integer number (13696307625).

Almost surely, 2^212221033313 is an apocalyptic number.

It is an amenable number.

212221033313 is a deficient number, since it is larger than the sum of its proper divisors (6919888687).

212221033313 is a wasteful number, since it uses less digits than its factorization.

212221033313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214532.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212221033313 its reverse (313330122212), we get a palindrome (525551155525).

The spelling of 212221033313 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-three thousand, three hundred thirteen".