22021302213 has 24 divisors (see below), whose sum is σ = 31960613880. Its totient is φ = 14610802560.

The previous prime is 22021302211. The next prime is 22021302217. The reversal of 22021302213 is 31220312022.

It can be written as a sum of positive squares in 4 ways, for example, as 316057284 + 21705244929 = 17778^2 + 147327^2 .

It is not a de Polignac number, because 22021302213 - 2¹ = 22021302211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021302211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2564395 + ... + 2572967.

It is an arithmetic number, because the mean of its divisors is an integer number (1331692245).

Almost surely, 2^22021302213 is an apocalyptic number.

It is an amenable number.

22021302213 is a deficient number, since it is larger than the sum of its proper divisors (9939311667).

22021302213 is a wasteful number, since it uses less digits than its factorization.

22021302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909 (or 9906 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22021302213 its reverse (31220312022), we get a palindrome (53241614235).

The spelling of 22021302213 in words is "twenty-two billion, twenty-one million, three hundred two thousand, two hundred thirteen".