12112101021011 has 4 divisors (see below), whose sum is σ = 12112600740000. Its totient is φ = 12111601302024.

The previous prime is 12112101020989. The next prime is 12112101021023. The reversal of 12112101021011 is 11012010121121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112101021011 is a prime.

It is a super-2 number, since 2×12112101021011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112101021061) 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 3 ways as a sum of consecutive naturals, for example, 249823136 + ... + 249871613.

It is an arithmetic number, because the mean of its divisors is an integer number (3028150185000).

Almost surely, 2^{12112101021011} is an apocalyptic number.

12112101021011 is a deficient number, since it is larger than the sum of its proper divisors (499718989).

12112101021011 is an equidigital number, since it uses as much as digits as its factorization.

12112101021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499718988.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12112101021011 its reverse (11012010121121), we get a palindrome (23124111142132).

The spelling of 12112101021011 in words is "twelve trillion, one hundred twelve billion, one hundred one million, twenty-one thousand, eleven".