200001101020 has 96 divisors (see below), whose sum is σ = 502882652160. Its totient is φ = 65369272320.

The previous prime is 200001101017. The next prime is 200001101059. The reversal of 200001101020 is 20101100002.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 200001100994 and 200001101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53125 + ... + 634684.

It is an arithmetic number, because the mean of its divisors is an integer number (5238360960).

Almost surely, 2^200001101020 is an apocalyptic number.

200001101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200001101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251441326080).

200001101020 is an abundant number, since it is smaller than the sum of its proper divisors (302881551140).

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

200001101020 is a wasteful number, since it uses less digits than its factorization.

200001101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687923 (or 687921 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 200001101020 its reverse (20101100002), we get a palindrome (220102201022).

The spelling of 200001101020 in words is "two hundred billion, one million, one hundred one thousand, twenty".