20020020001 has 4 divisors (see below), whose sum is σ = 20055081904. Its totient is φ = 19984958100.

The previous prime is 20020019969. The next prime is 20020020017. The reversal of 20020020001 is 10002002002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20020020001 - 2⁵ = 20020019969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020020091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17530095 + ... + 17531236.

It is an arithmetic number, because the mean of its divisors is an integer number (5013770476).

Almost surely, 2^20020020001 is an apocalyptic number.

It is an amenable number.

20020020001 is a deficient number, since it is larger than the sum of its proper divisors (35061903).

20020020001 is an equidigital number, since it uses as much as digits as its factorization.

20020020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35061902.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20020020001 its reverse (10002002002), we get a palindrome (30022022003).

The spelling of 20020020001 in words is "twenty billion, twenty million, twenty thousand, one".