12011211201111 has 8 divisors (see below), whose sum is σ = 16021519861104. Its totient is φ = 8004188337600.

The previous prime is 12011211201091. The next prime is 12011211201127. The reversal of 12011211201111 is 11110211211021.

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

It is not a de Polignac number, because 12011211201111 - 2⁷ = 12011211200983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211201211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821440590 + ... + 821455211.

It is an arithmetic number, because the mean of its divisors is an integer number (2002689982638).

Almost surely, 2^{12011211201111} is an apocalyptic number.

12011211201111 is a deficient number, since it is larger than the sum of its proper divisors (4010308659993).

12011211201111 is a wasteful number, since it uses less digits than its factorization.

12011211201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642898241.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12011211201111 its reverse (11110211211021), we get a palindrome (23121422412132).

The spelling of 12011211201111 in words is "twelve trillion, eleven billion, two hundred eleven million, two hundred one thousand, one hundred eleven".