12112102022021 has 4 divisors (see below), whose sum is σ = 12112114363212. Its totient is φ = 12112089680832.

The previous prime is 12112102022003. The next prime is 12112102022023. The reversal of 12112102022021 is 12022020121121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4478408250625 + 7633693771396 = 2116225^2 + 2762914^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112102022021 - 2²⁶ = 12112034913157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112102022023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4557956 + ... + 6708141.

It is an arithmetic number, because the mean of its divisors is an integer number (3028028590803).

Almost surely, 2^{12112102022021} is an apocalyptic number.

It is an amenable number.

12112102022021 is a deficient number, since it is larger than the sum of its proper divisors (12341191).

12112102022021 is a wasteful number, since it uses less digits than its factorization.

12112102022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12341190.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12112102022021 its reverse (12022020121121), we get a palindrome (24134122143142).

The spelling of 12112102022021 in words is "twelve trillion, one hundred twelve billion, one hundred two million, twenty-two thousand, twenty-one".