20002110201989 has 2 divisors, whose sum is σ = 20002110201990. Its totient is φ = 20002110201988.

The previous prime is 20002110201979. The next prime is 20002110202003. The reversal of 20002110201989 is 98910201120002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19220595856900 + 781514345089 = 4384130^2 + 884033^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002110201989 - 2¹² = 20002110197893 is a prime.

It is a super-2 number, since 2×20002110201989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002110201979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001055100994 + 10001055100995.

It is an arithmetic number, because the mean of its divisors is an integer number (10001055100995).

Almost surely, 2^{20002110201989} is an apocalyptic number.

It is an amenable number.

20002110201989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002110201989 is an equidigital number, since it uses as much as digits as its factorization.

20002110201989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 20002110201989 in words is "twenty trillion, two billion, one hundred ten million, two hundred one thousand, nine hundred eighty-nine".