12112122011 has 8 divisors (see below), whose sum is σ = 13294288704. Its totient is φ = 10943466120.

The previous prime is 12112121947. The next prime is 12112122017. The reversal of 12112122011 is 11022121121.

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 12112122011 - 2⁶ = 12112121947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3375821 + ... + 3379406.

It is an arithmetic number, because the mean of its divisors is an integer number (1661786088).

Almost surely, 2^12112122011 is an apocalyptic number.

12112122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112122011 is a deficient number, since it is larger than the sum of its proper divisors (1182166693).

12112122011 is a wasteful number, since it uses less digits than its factorization.

12112122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755401.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12112122011 its reverse (11022121121), we get a palindrome (23134243132).

The spelling of 12112122011 in words is "twelve billion, one hundred twelve million, one hundred twenty-two thousand, eleven".