12001111020311 has 16 divisors (see below), whose sum is σ = 13974609146688. Its totient is φ = 10092383808000.

The previous prime is 12001111020287. The next prime is 12001111020313. The reversal of 12001111020311 is 11302011110021.

It is a de Polignac number, because none of the positive numbers 2^k-12001111020311 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 (12001111020313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20878661 + ... + 21445761.

It is an arithmetic number, because the mean of its divisors is an integer number (873413071668).

Almost surely, 2^{12001111020311} is an apocalyptic number.

12001111020311 is a deficient number, since it is larger than the sum of its proper divisors (1973498126377).

12001111020311 is an equidigital number, since it uses as much as digits as its factorization.

12001111020311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624202.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12001111020311 its reverse (11302011110021), we get a palindrome (23303122130332).

The spelling of 12001111020311 in words is "twelve trillion, one billion, one hundred eleven million, twenty thousand, three hundred eleven".