20002112201021 has 2 divisors, whose sum is σ = 20002112201022. Its totient is φ = 20002112201020.

The previous prime is 20002112201011. The next prime is 20002112201047. The reversal of 20002112201021 is 12010221120002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19995108184921 + 7004016100 = 4471589^2 + 83690^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002112201021 - 2¹⁰ = 20002112199997 is a prime.

It is a super-2 number, since 2×20002112201021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20002112200987 and 20002112201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002112201011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001056100510 + 10001056100511.

It is an arithmetic number, because the mean of its divisors is an integer number (10001056100511).

Almost surely, 2^{20002112201021} is an apocalyptic number.

It is an amenable number.

20002112201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002112201021 is an equidigital number, since it uses as much as digits as its factorization.

20002112201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20002112201021 its reverse (12010221120002), we get a palindrome (32012333321023).

The spelling of 20002112201021 in words is "twenty trillion, two billion, one hundred twelve million, two hundred one thousand, twenty-one".