20010200020 has 12 divisors (see below), whose sum is σ = 42021420084. Its totient is φ = 8004080000.

The previous prime is 20010199973. The next prime is 20010200059. The reversal of 20010200020 is 2000201002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13270118416 + 6740081604 = 115196^2 + 82098^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20010199976 and 20010200012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500254981 + ... + 500255020.

It is an arithmetic number, because the mean of its divisors is an integer number (3501785007).

Almost surely, 2^20010200020 is an apocalyptic number.

20010200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010200020 is an abundant number, since it is smaller than the sum of its proper divisors (22011220064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010200020 is a wasteful number, since it uses less digits than its factorization.

20010200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000510010 (or 1000510008 counting only the distinct ones).

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

Adding to 20010200020 its reverse (2000201002), we get a palindrome (22010401022).

The spelling of 20010200020 in words is "twenty billion, ten million, two hundred thousand, twenty".