12112010210221 has 8 divisors (see below), whose sum is σ = 12209072981400. Its totient is φ = 12015157760832.

The previous prime is 12112010210203. The next prime is 12112010210227. The reversal of 12112010210221 is 12201201021121.

It can be written as a sum of positive squares in 4 ways, for example, as 1297008196 + 12110713202025 = 36014^2 + 3480045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112010210221 - 2¹¹ = 12112010208173 is a prime.

It is a super-2 number, since 2×12112010210221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112010210195 and 12112010210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112010210227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52464810 + ... + 52695163.

It is an arithmetic number, because the mean of its divisors is an integer number (1526134122675).

Almost surely, 2^{12112010210221} is an apocalyptic number.

It is an amenable number.

12112010210221 is a deficient number, since it is larger than the sum of its proper divisors (97062771179).

12112010210221 is a wasteful number, since it uses less digits than its factorization.

12112010210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105160895.

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

Adding to 12112010210221 its reverse (12201201021121), we get a palindrome (24313211231342).

The spelling of 12112010210221 in words is "twelve trillion, one hundred twelve billion, ten million, two hundred ten thousand, two hundred twenty-one".