22123243213 has 2 divisors, whose sum is σ = 22123243214. Its totient is φ = 22123243212.

The previous prime is 22123243211. The next prime is 22123243229. The reversal of 22123243213 is 31234232122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20679015204 + 1444228009 = 143802^2 + 38003^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123243213 - 2¹ = 22123243211 is a prime.

Together with 22123243211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22123243211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061621606 + 11061621607.

It is an arithmetic number, because the mean of its divisors is an integer number (11061621607).

Almost surely, 2^22123243213 is an apocalyptic number.

It is an amenable number.

22123243213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123243213 is an equidigital number, since it uses as much as digits as its factorization.

22123243213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

Adding to 22123243213 its reverse (31234232122), we get a palindrome (53357475335).

The spelling of 22123243213 in words is "twenty-two billion, one hundred twenty-three million, two hundred forty-three thousand, two hundred thirteen".