12101311011011 has 4 divisors (see below), whose sum is σ = 12126574708800. Its totient is φ = 12076047313224.

The previous prime is 12101311010989. The next prime is 12101311011037. The reversal of 12101311011011 is 11011011310121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12101311011011 - 2⁶ = 12101311010947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101311011311) 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 in 3 ways as a sum of consecutive naturals, for example, 12631848176 + ... + 12631849133.

It is an arithmetic number, because the mean of its divisors is an integer number (3031643677200).

Almost surely, 2^{12101311011011} is an apocalyptic number.

12101311011011 is a deficient number, since it is larger than the sum of its proper divisors (25263697789).

12101311011011 is an equidigital number, since it uses as much as digits as its factorization.

12101311011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25263697788.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 12101311011011 its reverse (11011011310121), we get a palindrome (23112322321132).

The spelling of 12101311011011 in words is "twelve trillion, one hundred one billion, three hundred eleven million, eleven thousand, eleven".