12122911 has 4 divisors (see below), whose sum is σ = 12133800. Its totient is φ = 12112024.

The previous prime is 12122879. The next prime is 12122933. The reversal of 12122911 is 11922121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12122911 - 2⁵ = 12122879 is a prime.

It is a super-2 number, since 2×12122911² = 293929942227842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122941) 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, 3556 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (3033450).

Almost surely, 2^12122911 is an apocalyptic number.

12122911 is a deficient number, since it is larger than the sum of its proper divisors (10889).

12122911 is an equidigital number, since it uses as much as digits as its factorization.

12122911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888.

The product of its digits is 72, while the sum is 19.

The square root of 12122911 is about 3481.7970934562. The cubic root of 12122911 is about 229.7218502716.

It can be divided in two parts, 121 and 22911, that added together give a palindrome (23032).

The spelling of 12122911 in words is "twelve million, one hundred twenty-two thousand, nine hundred eleven".