200021111020 has 12 divisors (see below), whose sum is σ = 420044333184. Its totient is φ = 80008444400.

The previous prime is 200021110937. The next prime is 200021111021. The reversal of 200021111020 is 20111120002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 200021110988 and 200021111006.

It is not an unprimeable number, because it can be changed into a prime (200021111021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000527756 + ... + 5000527795.

It is an arithmetic number, because the mean of its divisors is an integer number (35003694432).

Almost surely, 2^200021111020 is an apocalyptic number.

200021111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021111020 is an abundant number, since it is smaller than the sum of its proper divisors (220023222164).

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

200021111020 is a wasteful number, since it uses less digits than its factorization.

200021111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001055560 (or 10001055558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 200021111020 its reverse (20111120002), we get a palindrome (220132231022).

The spelling of 200021111020 in words is "two hundred billion, twenty-one million, one hundred eleven thousand, twenty".