12011133121211 has 48 divisors (see below), whose sum is σ = 14558654607840. Its totient is φ = 9873138240000.

The previous prime is 12011133121159. The next prime is 12011133121291. The reversal of 12011133121211 is 11212133111021.

It is not a de Polignac number, because 12011133121211 - 2¹⁸ = 12011132859067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011133121291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27991421 + ... + 28417281.

It is an arithmetic number, because the mean of its divisors is an integer number (303305304330).

Almost surely, 2^{12011133121211} is an apocalyptic number.

12011133121211 is a deficient number, since it is larger than the sum of its proper divisors (2547521486629).

12011133121211 is a wasteful number, since it uses less digits than its factorization.

12011133121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426156 (or 426149 counting only the distinct ones).

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

Adding to 12011133121211 its reverse (11212133111021), we get a palindrome (23223266232232).

The spelling of 12011133121211 in words is "twelve trillion, eleven billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred eleven".