12112121002021 has 2 divisors, whose sum is σ = 12112121002022. Its totient is φ = 12112121002020.

The previous prime is 12112121001989. The next prime is 12112121002081. The reversal of 12112121002021 is 12020012121121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7650673020225 + 4461447981796 = 2765985^2 + 2112214^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112121002021 - 2⁵ = 12112121001989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112121001986 and 12112121002004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112121002081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056060501010 + 6056060501011.

It is an arithmetic number, because the mean of its divisors is an integer number (6056060501011).

Almost surely, 2^{12112121002021} is an apocalyptic number.

It is an amenable number.

12112121002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112121002021 is an equidigital number, since it uses as much as digits as its factorization.

12112121002021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12112121002021 its reverse (12020012121121), we get a palindrome (24132133123142).

The spelling of 12112121002021 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, two thousand, twenty-one".