12011322021311 has 4 divisors (see below), whose sum is σ = 12039988661400. Its totient is φ = 11982655381224.

The previous prime is 12011322021277. The next prime is 12011322021323. The reversal of 12011322021311 is 11312022311021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011322021311 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 (12011322021011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14333319416 + ... + 14333320253.

It is an arithmetic number, because the mean of its divisors is an integer number (3009997165350).

Almost surely, 2^{12011322021311} is an apocalyptic number.

12011322021311 is a deficient number, since it is larger than the sum of its proper divisors (28666640089).

12011322021311 is an equidigital number, since it uses as much as digits as its factorization.

12011322021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28666640088.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12011322021311 its reverse (11312022311021), we get a palindrome (23323344332332).

The spelling of 12011322021311 in words is "twelve trillion, eleven billion, three hundred twenty-two million, twenty-one thousand, three hundred eleven".