10010101020020 has 24 divisors (see below), whose sum is σ = 21021334480104. Its totient is φ = 4004017105536.

The previous prime is 10010101019927. The next prime is 10010101020037. The reversal of 10010101020020 is 2002010101001.

It can be written as a sum of positive squares in 4 ways, for example, as 3095157601636 + 6914943418384 = 1759306^2 + 2629628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302742 + ... + 5032178.

It is an arithmetic number, because the mean of its divisors is an integer number (875888936671).

Almost surely, 2^{10010101020020} is an apocalyptic number.

10010101020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10010101020020 is an abundant number, since it is smaller than the sum of its proper divisors (11011233460084).

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

10010101020020 is a wasteful number, since it uses less digits than its factorization.

10010101020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912819 (or 2912817 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10010101020020 its reverse (2002010101001), we get a palindrome (12012111121021).

The spelling of 10010101020020 in words is "ten trillion, ten billion, one hundred one million, twenty thousand, twenty".