100200200002020 has 72 divisors (see below), whose sum is σ = 304029819160704. Its totient is φ = 26712210477888.

The previous prime is 100200200002009. The next prime is 100200200002037. The reversal of 100200200002020 is 20200002002001.

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 = 100200200001993 and 100200200002011.

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, 81081454 + ... + 82307973.

It is an arithmetic number, because the mean of its divisors is an integer number (4222636377232).

Almost surely, 2^{100200200002020} is an apocalyptic number.

100200200002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100200200002020 is an abundant number, since it is smaller than the sum of its proper divisors (203829619158684).

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

100200200002020 is a wasteful number, since it uses less digits than its factorization.

100200200002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163392849 (or 163392844 counting only the distinct ones).

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

Adding to 100200200002020 its reverse (20200002002001), we get a palindrome (120400202004021).

The spelling of 100200200002020 in words is "one hundred trillion, two hundred billion, two hundred million, two thousand, twenty".