11223122213 has 2 divisors, whose sum is σ = 11223122214. Its totient is φ = 11223122212.

The previous prime is 11223122191. The next prime is 11223122257. The reversal of 11223122213 is 31222132211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9626160769 + 1596961444 = 98113^2 + 39962^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223122213 - 2²⁴ = 11206344997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223127213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611561106 + 5611561107.

It is an arithmetic number, because the mean of its divisors is an integer number (5611561107).

Almost surely, 2^11223122213 is an apocalyptic number.

It is an amenable number.

11223122213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223122213 is an equidigital number, since it uses as much as digits as its factorization.

11223122213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

Adding to 11223122213 its reverse (31222132211), we get a palindrome (42445254424).

The spelling of 11223122213 in words is "eleven billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred thirteen".