12120311211311 has 8 divisors (see below), whose sum is σ = 12363026524800. Its totient is φ = 11879413990488.

The previous prime is 12120311211301. The next prime is 12120311211329. The reversal of 12120311211311 is 11311211302121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120311211311 - 2¹⁸ = 12120310949167 is a prime.

It is a super-2 number, since 2×12120311211311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120311211301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454509701 + ... + 454536366.

It is an arithmetic number, because the mean of its divisors is an integer number (1545378315600).

Almost surely, 2^{12120311211311} is an apocalyptic number.

12120311211311 is a deficient number, since it is larger than the sum of its proper divisors (242715313489).

12120311211311 is an equidigital number, since it uses as much as digits as its factorization.

12120311211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909046333.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12120311211311 its reverse (11311211302121), we get a palindrome (23431522513432).

The spelling of 12120311211311 in words is "twelve trillion, one hundred twenty billion, three hundred eleven million, two hundred eleven thousand, three hundred eleven".