200102001020 has 24 divisors (see below), whose sum is σ = 421359215424. Its totient is φ = 79822702656.

The previous prime is 200102001017. The next prime is 200102001037. The reversal of 200102001020 is 20100201002.

200102001020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 200102000989 and 200102001007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13623587 + ... + 13638266.

It is an arithmetic number, because the mean of its divisors is an integer number (17556633976).

Almost surely, 2^200102001020 is an apocalyptic number.

200102001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102001020 is an abundant number, since it is smaller than the sum of its proper divisors (221257214404).

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

200102001020 is a wasteful number, since it uses less digits than its factorization.

200102001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27262229 (or 27262227 counting only the distinct ones).

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

Adding to 200102001020 its reverse (20100201002), we get a palindrome (220202202022).

The spelling of 200102001020 in words is "two hundred billion, one hundred two million, one thousand, twenty".