200000100020 has 96 divisors (see below), whose sum is σ = 492881469696. Its totient is φ = 66739276800.

The previous prime is 200000100011. The next prime is 200000100023. The reversal of 200000100020 is 20001000002.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 200000099977 and 200000100013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000100023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2375159 + ... + 2457921.

It is an arithmetic number, because the mean of its divisors is an integer number (5134181976).

Almost surely, 2^200000100020 is an apocalyptic number.

200000100020 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 200000100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246440734848).

200000100020 is an abundant number, since it is smaller than the sum of its proper divisors (292881369676).

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

200000100020 is a wasteful number, since it uses less digits than its factorization.

200000100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83241 (or 83239 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 200000100020 its reverse (20001000002), we get a palindrome (220001100022).

The spelling of 200000100020 in words is "two hundred billion, one hundred thousand, twenty".