12112016072021 has 2 divisors, whose sum is σ = 12112016072022. Its totient is φ = 12112016072020.

The previous prime is 12112016071997. The next prime is 12112016072069. The reversal of 12112016072021 is 12027061021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8032060459921 + 4079955612100 = 2834089^2 + 2019890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112016072021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112016072921) 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 as a sum of consecutive naturals, namely, 6056008036010 + 6056008036011.

It is an arithmetic number, because the mean of its divisors is an integer number (6056008036011).

Almost surely, 2^{12112016072021} is an apocalyptic number.

It is an amenable number.

12112016072021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112016072021 is an equidigital number, since it uses as much as digits as its factorization.

12112016072021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 12112016072021 its reverse (12027061021121), we get a palindrome (24139077093142).

The spelling of 12112016072021 in words is "twelve trillion, one hundred twelve billion, sixteen million, seventy-two thousand, twenty-one".