11313332221 has 2 divisors, whose sum is σ = 11313332222. Its totient is φ = 11313332220.

The previous prime is 11313332213. The next prime is 11313332249. The reversal of 11313332221 is 12223331311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8466576196 + 2846756025 = 92014^2 + 53355^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313332221 - 2³ = 11313332213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11313332192 and 11313332201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313332321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656666110 + 5656666111.

It is an arithmetic number, because the mean of its divisors is an integer number (5656666111).

Almost surely, 2^11313332221 is an apocalyptic number.

It is an amenable number.

11313332221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313332221 is an equidigital number, since it uses as much as digits as its factorization.

11313332221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 11313332221 its reverse (12223331311), we get a palindrome (23536663532).

The spelling of 11313332221 in words is "eleven billion, three hundred thirteen million, three hundred thirty-two thousand, two hundred twenty-one".