12112212211 has 8 divisors (see below), whose sum is σ = 13214401200. Its totient is φ = 11010203040.

The previous prime is 12112212197. The next prime is 12112212223. The reversal of 12112212211 is 11221221121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112212211 - 2²⁹ = 11575341299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112512211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123285 + ... + 198553.

It is an arithmetic number, because the mean of its divisors is an integer number (1651800150).

Almost surely, 2^12112212211 is an apocalyptic number.

12112212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112212211 is a deficient number, since it is larger than the sum of its proper divisors (1102188989).

12112212211 is a wasteful number, since it uses less digits than its factorization.

12112212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89909.

The product of its digits is 32, while the sum is 16.

Adding to 12112212211 its reverse (11221221121), we get a palindrome (23333433332).

The spelling of 12112212211 in words is "twelve billion, one hundred twelve million, two hundred twelve thousand, two hundred eleven".