11121213313321 has 2 divisors, whose sum is σ = 11121213313322. Its totient is φ = 11121213313320.

The previous prime is 11121213313319. The next prime is 11121213313369. The reversal of 11121213313321 is 12331331212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10218181234921 + 903032078400 = 3196589^2 + 950280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121213313321 - 2¹ = 11121213313319 is a prime.

Together with 11121213313319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11121213313921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560606656660 + 5560606656661.

It is an arithmetic number, because the mean of its divisors is an integer number (5560606656661).

Almost surely, 2^{11121213313321} is an apocalyptic number.

It is an amenable number.

11121213313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121213313321 is an equidigital number, since it uses as much as digits as its factorization.

11121213313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 25.

Adding to 11121213313321 its reverse (12331331212111), we get a palindrome (23452544525432).

The spelling of 11121213313321 in words is "eleven trillion, one hundred twenty-one billion, two hundred thirteen million, three hundred thirteen thousand, three hundred twenty-one".