20020200101009 has 4 divisors (see below), whose sum is σ = 20710551828660. Its totient is φ = 19329848373360.

The previous prime is 20020200101003. The next prime is 20020200101047. The reversal of 20020200101009 is 90010100202002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10753624849984 + 9266575251025 = 3279272^2 + 3044105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020200101009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020200101003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345175863782 + ... + 345175863839.

It is an arithmetic number, because the mean of its divisors is an integer number (5177637957165).

Almost surely, 2^{20020200101009} is an apocalyptic number.

20020200101009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20020200101009 is a deficient number, since it is larger than the sum of its proper divisors (690351727651).

20020200101009 is an equidigital number, since it uses as much as digits as its factorization.

20020200101009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690351727650.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 20020200101009 in words is "twenty trillion, twenty billion, two hundred million, one hundred one thousand, nine".