12011322122311 has 4 divisors (see below), whose sum is σ = 12425505643800. Its totient is φ = 11597138600824.

The previous prime is 12011322122269. The next prime is 12011322122323. The reversal of 12011322122311 is 11322122311021.

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 12011322122311 - 2³⁵ = 11976962383943 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 (12011322122381) 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, 207091760701 + ... + 207091760758.

It is an arithmetic number, because the mean of its divisors is an integer number (3106376410950).

Almost surely, 2^{12011322122311} is an apocalyptic number.

12011322122311 is a deficient number, since it is larger than the sum of its proper divisors (414183521489).

12011322122311 is an equidigital number, since it uses as much as digits as its factorization.

12011322122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414183521488.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12011322122311 its reverse (11322122311021), we get a palindrome (23333444433332).

The spelling of 12011322122311 in words is "twelve trillion, eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, three hundred eleven".