2020001100 has 72 divisors (see below), whose sum is σ = 6294128400. Its totient is φ = 497230080.

The previous prime is 2020001089. The next prime is 2020001117. The reversal of 2020001100 is 11000202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 255075 + ... + 262874.

It is an arithmetic number, because the mean of its divisors is an integer number (87418450).

Almost surely, 2^2020001100 is an apocalyptic number.

2020001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020001100 is an abundant number, since it is smaller than the sum of its proper divisors (4274127300).

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

2020001100 is a wasteful number, since it uses less digits than its factorization.

2020001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517979 (or 517972 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2020001100 is about 44944.4223458262. The cubic root of 2020001100 is about 1264.1070943216.

Adding to 2020001100 its reverse (11000202), we get a palindrome (2031001302).

The spelling of 2020001100 in words is "two billion, twenty million, one thousand, one hundred".