12011012123311 has 4 divisors (see below), whose sum is σ = 12013743765672. Its totient is φ = 12008280480952.

The previous prime is 12011012123267. The next prime is 12011012123417. The reversal of 12011012123311 is 11332121011021.

12011012123311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12011012123311 - 2⁷ = 12011012123183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011012123111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365814585 + ... + 1365823378.

It is an arithmetic number, because the mean of its divisors is an integer number (3003435941418).

Almost surely, 2^{12011012123311} is an apocalyptic number.

12011012123311 is a deficient number, since it is larger than the sum of its proper divisors (2731642361).

12011012123311 is an equidigital number, since it uses as much as digits as its factorization.

12011012123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731642360.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12011012123311 its reverse (11332121011021), we get a palindrome (23343133134332).

The spelling of 12011012123311 in words is "twelve trillion, eleven billion, twelve million, one hundred twenty-three thousand, three hundred eleven".