12322121311 has 4 divisors (see below), whose sum is σ = 12331909800. Its totient is φ = 12312332824.

The previous prime is 12322121303. The next prime is 12322121347. The reversal of 12322121311 is 11312122321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312122321 = 19 ⋅595374859.

It is a cyclic number.

It is not a de Polignac number, because 12322121311 - 2³ = 12322121303 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 (12322121351) 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, 4892356 + ... + 4894873.

It is an arithmetic number, because the mean of its divisors is an integer number (3082977450).

Almost surely, 2^12322121311 is an apocalyptic number.

12322121311 is a deficient number, since it is larger than the sum of its proper divisors (9788489).

12322121311 is an equidigital number, since it uses as much as digits as its factorization.

12322121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788488.

The product of its digits is 144, while the sum is 19.

Adding to 12322121311 its reverse (11312122321), we get a palindrome (23634243632).

The spelling of 12322121311 in words is "twelve billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred eleven".