20200000010209 has 2 divisors, whose sum is σ = 20200000010210. Its totient is φ = 20200000010208.

The previous prime is 20200000010167. The next prime is 20200000010227. The reversal of 20200000010209 is 90201000000202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20125990440000 + 74009570209 = 4486200^2 + 272047^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200000010209 - 2¹⁹ = 20199999485921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200000010192 and 20200000010201.

It is not a weakly prime, because it can be changed into another prime (20200000010279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100000005104 + 10100000005105.

It is an arithmetic number, because the mean of its divisors is an integer number (10100000005105).

Almost surely, 2^{20200000010209} is an apocalyptic number.

It is an amenable number.

20200000010209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200000010209 is an equidigital number, since it uses as much as digits as its factorization.

20200000010209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The spelling of 20200000010209 in words is "twenty trillion, two hundred billion, ten thousand, two hundred nine".