200001200020 has 24 divisors (see below), whose sum is σ = 420107977800. Its totient is φ = 79980392832.

The previous prime is 200001200011. The next prime is 200001200029. The reversal of 200001200020 is 20002100002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200001200011) and next prime (200001200029).

It can be written as a sum of positive squares in 4 ways, for example, as 72386064 + 199928813956 = 8508^2 + 447134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200001199976 and 200001200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200001200029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173675 + ... + 1333234.

It is an arithmetic number, because the mean of its divisors is an integer number (17504499075).

Almost surely, 2^200001200020 is an apocalyptic number.

200001200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200001200020 is an abundant number, since it is smaller than the sum of its proper divisors (220106777780).

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

200001200020 is a wasteful number, since it uses less digits than its factorization.

200001200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510907 (or 2510905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 200001200020 its reverse (20002100002), we get a palindrome (220003300022).

The spelling of 200001200020 in words is "two hundred billion, one million, two hundred thousand, twenty".