2020100020 has 12 divisors (see below), whose sum is σ = 4242210084. Its totient is φ = 808040000.

The previous prime is 2020099937. The next prime is 2020100029. The reversal of 2020100020 is 200010202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1541190564 + 478909456 = 39258^2 + 21884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2020099976 and 2020100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020100029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50502481 + ... + 50502520.

It is an arithmetic number, because the mean of its divisors is an integer number (353517507).

Almost surely, 2^2020100020 is an apocalyptic number.

2020100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020100020 is an abundant number, since it is smaller than the sum of its proper divisors (2222110064).

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

2020100020 is a wasteful number, since it uses less digits than its factorization.

2020100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101005010 (or 101005008 counting only the distinct ones).

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

The square root of 2020100020 is about 44945.5228026107. The cubic root of 2020100020 is about 1264.1277285401.

Adding to 2020100020 its reverse (200010202), we get a palindrome (2220110222).

The spelling of 2020100020 in words is "two billion, twenty million, one hundred thousand, twenty".