12112001021011 has 4 divisors (see below), whose sum is σ = 12112112974032. Its totient is φ = 12111889067992.

The previous prime is 12112001020961. The next prime is 12112001021017. The reversal of 12112001021011 is 11012010021121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12112001021011 - 2¹³ = 12112001012819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112001020982 and 12112001021000.

It is not an unprimeable number, because it can be changed into a prime (12112001021017) 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 3 ways as a sum of consecutive naturals, for example, 55814071 + ... + 56030656.

It is an arithmetic number, because the mean of its divisors is an integer number (3028028243508).

Almost surely, 2^{12112001021011} is an apocalyptic number.

12112001021011 is a deficient number, since it is larger than the sum of its proper divisors (111953021).

12112001021011 is a wasteful number, since it uses less digits than its factorization.

12112001021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111953020.

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

Adding to 12112001021011 its reverse (11012010021121), we get a palindrome (23124011042132).

The spelling of 12112001021011 in words is "twelve trillion, one hundred twelve billion, one million, twenty-one thousand, eleven".