10002020002020 has 72 divisors (see below), whose sum is σ = 31463144416704. Its totient is φ = 2667205332576.

The previous prime is 10002020001977. The next prime is 10002020002031. The reversal of 10002020002020 is 2020002020001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10002020001993 and 10002020002011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1029009544 + ... + 1029019263.

Almost surely, 2^{10002020002020} is an apocalyptic number.

10002020002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10002020002020 is an abundant number, since it is smaller than the sum of its proper divisors (21461124414684).

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

10002020002020 is a wasteful number, since it uses less digits than its factorization.

10002020002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058028831 (or 2058028817 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 10002020002020 its reverse (2020002020001), we get a palindrome (12022022022021).

The spelling of 10002020002020 in words is "ten trillion, two billion, twenty million, two thousand, twenty".