20012021020163 has 2 divisors, whose sum is σ = 20012021020164. Its totient is φ = 20012021020162.

The previous prime is 20012021020039. The next prime is 20012021020169. The reversal of 20012021020163 is 36102012021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012021020163 - 2¹⁰ = 20012021019139 is a prime.

It is a super-2 number, since 2×20012021020163² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20012021020169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006010510081 + 10006010510082.

It is an arithmetic number, because the mean of its divisors is an integer number (10006010510082).

Almost surely, 2^{20012021020163} is an apocalyptic number.

20012021020163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012021020163 is an equidigital number, since it uses as much as digits as its factorization.

20012021020163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20012021020163 its reverse (36102012021002), we get a palindrome (56114033041165).

The spelling of 20012021020163 in words is "twenty trillion, twelve billion, twenty-one million, twenty thousand, one hundred sixty-three".