1323111011011 has 2 divisors, whose sum is σ = 1323111011012. Its totient is φ = 1323111011010.

The previous prime is 1323111011003. The next prime is 1323111011039. The reversal of 1323111011011 is 1101101113231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323111011011 - 2³ = 1323111011003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323111011081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661555505505 + 661555505506.

It is an arithmetic number, because the mean of its divisors is an integer number (661555505506).

Almost surely, 2^{1323111011011} is an apocalyptic number.

1323111011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323111011011 is an equidigital number, since it uses as much as digits as its factorization.

1323111011011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1323111011011 its reverse (1101101113231), we get a palindrome (2424212124242).

It can be divided in two parts, 13231 and 11011011, that multiplied together give a palindrome (145686686541).

The spelling of 1323111011011 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, eleven thousand, eleven".