200102200020 has 36 divisors (see below), whose sum is σ = 606976673940. Its totient is φ = 53360586624.

The previous prime is 200102200013. The next prime is 200102200057. The reversal of 200102200020 is 20002201002.

It can be written as a sum of positive squares in 2 ways, for example, as 26203191876 + 173899008144 = 161874^2 + 417012^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200102199975 and 200102200011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555839265 + ... + 555839624.

It is an arithmetic number, because the mean of its divisors is an integer number (16860463165).

Almost surely, 2^200102200020 is an apocalyptic number.

200102200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102200020 is an abundant number, since it is smaller than the sum of its proper divisors (406874473920).

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

200102200020 is a wasteful number, since it uses less digits than its factorization.

200102200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111678904 (or 1111678899 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 200102200020 its reverse (20002201002), we get a palindrome (220104401022).

The spelling of 200102200020 in words is "two hundred billion, one hundred two million, two hundred thousand, twenty".