1020200020100 has 72 divisors (see below), whose sum is σ = 2345195314560. Its totient is φ = 384139566720.

The previous prime is 1020200020067. The next prime is 1020200020153. The reversal of 1020200020100 is 10200020201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1411724 + ... + 2008323.

Almost surely, 2^{1020200020100} is an apocalyptic number.

1020200020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020200020100 is an abundant number, since it is smaller than the sum of its proper divisors (1324995294460).

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

1020200020100 is a wasteful number, since it uses less digits than its factorization.

1020200020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420237 (or 3420230 counting only the distinct ones).

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

Adding to 1020200020100 its reverse (10200020201), we get a palindrome (1030400040301).

The spelling of 1020200020100 in words is "one trillion, twenty billion, two hundred million, twenty thousand, one hundred".