12012021102311 has 4 divisors (see below), whose sum is σ = 12534282889392. Its totient is φ = 11489759315232.

The previous prime is 12012021102307. The next prime is 12012021102329. The reversal of 12012021102311 is 11320112021021.

It is a happy number.

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 12012021102311 - 2² = 12012021102307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012021102311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012021102391) 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, 261130893506 + ... + 261130893551.

It is an arithmetic number, because the mean of its divisors is an integer number (3133570722348).

Almost surely, 2^{12012021102311} is an apocalyptic number.

12012021102311 is a deficient number, since it is larger than the sum of its proper divisors (522261787081).

12012021102311 is an equidigital number, since it uses as much as digits as its factorization.

12012021102311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522261787080.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12012021102311 its reverse (11320112021021), we get a palindrome (23332133123332).

The spelling of 12012021102311 in words is "twelve trillion, twelve billion, twenty-one million, one hundred two thousand, three hundred eleven".