11223212231321 has 2 divisors, whose sum is σ = 11223212231322. Its totient is φ = 11223212231320.

The previous prime is 11223212231303. The next prime is 11223212231369. The reversal of 11223212231321 is 12313221232211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10911361465225 + 311850766096 = 3303235^2 + 558436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223212231321 is a prime.

It is a super-2 number, since 2×11223212231321² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11223212201321) 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, 5611606115660 + 5611606115661.

It is an arithmetic number, because the mean of its divisors is an integer number (5611606115661).

Almost surely, 2^{11223212231321} is an apocalyptic number.

It is an amenable number.

11223212231321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223212231321 is an equidigital number, since it uses as much as digits as its factorization.

11223212231321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

Adding to 11223212231321 its reverse (12313221232211), we get a palindrome (23536433463532).

The spelling of 11223212231321 in words is "eleven trillion, two hundred twenty-three billion, two hundred twelve million, two hundred thirty-one thousand, three hundred twenty-one".