12122311 has 4 divisors (see below), whose sum is σ = 12649392. Its totient is φ = 11595232.

The previous prime is 12122293. The next prime is 12122339. The reversal of 12122311 is 11322121.

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 12122311 - 2²³ = 3733703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122291 and 12122300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122371) 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, 263506 + ... + 263551.

It is an arithmetic number, because the mean of its divisors is an integer number (3162348).

Almost surely, 2^12122311 is an apocalyptic number.

12122311 is a deficient number, since it is larger than the sum of its proper divisors (527081).

12122311 is an equidigital number, since it uses as much as digits as its factorization.

12122311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527080.

The product of its digits is 24, while the sum is 13.

The square root of 12122311 is about 3481.7109299883. The cubic root of 12122311 is about 229.7180603297.

Adding to 12122311 its reverse (11322121), we get a palindrome (23444432).

The spelling of 12122311 in words is "twelve million, one hundred twenty-two thousand, three hundred eleven".