11313333221 has 2 divisors, whose sum is σ = 11313333222. Its totient is φ = 11313333220.

The previous prime is 11313333211. The next prime is 11313333253. The reversal of 11313333221 is 12233331311.

11313333221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8443588321 + 2869744900 = 91889^2 + 53570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11313333221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313333211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656666610 + 5656666611.

It is an arithmetic number, because the mean of its divisors is an integer number (5656666611).

Almost surely, 2^11313333221 is an apocalyptic number.

It is an amenable number.

11313333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313333221 is an equidigital number, since it uses as much as digits as its factorization.

11313333221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 23.

Adding to 11313333221 its reverse (12233331311), we get a palindrome (23546664532).

The spelling of 11313333221 in words is "eleven billion, three hundred thirteen million, three hundred thirty-three thousand, two hundred twenty-one".