12011020201111 has 4 divisors (see below), whose sum is σ = 12061275516000. Its totient is φ = 11960764886224.

The previous prime is 12011020201109. The next prime is 12011020201123. The reversal of 12011020201111 is 11110202011021.

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 12011020201111 - 2¹ = 12011020201109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011020201091 and 12011020201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011020241111) 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 3 ways as a sum of consecutive naturals, for example, 25127657086 + ... + 25127657563.

It is an arithmetic number, because the mean of its divisors is an integer number (3015318879000).

Almost surely, 2^{12011020201111} is an apocalyptic number.

12011020201111 is a deficient number, since it is larger than the sum of its proper divisors (50255314889).

12011020201111 is an equidigital number, since it uses as much as digits as its factorization.

12011020201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50255314888.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12011020201111 its reverse (11110202011021), we get a palindrome (23121222212132).

The spelling of 12011020201111 in words is "twelve trillion, eleven billion, twenty million, two hundred one thousand, one hundred eleven".