12112121011 has 12 divisors (see below), whose sum is σ = 13070088640. Its totient is φ = 11211765840.

The previous prime is 12112120997. The next prime is 12112121017. The reversal of 12112121011 is 11012121121.

It is a happy number.

12112121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12112121011 - 2²⁵ = 12078566579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112120982 and 12112121000.

It is not an unprimeable number, because it can be changed into a prime (12112121017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352896 + ... + 385693.

Almost surely, 2^12112121011 is an apocalyptic number.

12112121011 is a deficient number, since it is larger than the sum of its proper divisors (957967629).

12112121011 is an equidigital number, since it uses as much as digits as its factorization.

12112121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738666 (or 738643 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12112121011 its reverse (11012121121), we get a palindrome (23124242132).

The spelling of 12112121011 in words is "twelve billion, one hundred twelve million, one hundred twenty-one thousand, eleven".