11121313331 has 2 divisors, whose sum is σ = 11121313332. Its totient is φ = 11121313330.

The previous prime is 11121313319. The next prime is 11121313337. The reversal of 11121313331 is 13331312111.

11121313331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121313331 is a prime.

It is a super-2 number, since 2×11121313331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11121313337) 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, 5560656665 + 5560656666.

It is an arithmetic number, because the mean of its divisors is an integer number (5560656666).

Almost surely, 2^11121313331 is an apocalyptic number.

11121313331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121313331 is an equidigital number, since it uses as much as digits as its factorization.

11121313331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 20.

Adding to 11121313331 its reverse (13331312111), we get a palindrome (24452625442).

The spelling of 11121313331 in words is "eleven billion, one hundred twenty-one million, three hundred thirteen thousand, three hundred thirty-one".