200102102020 has 48 divisors (see below), whose sum is σ = 443928058560. Its totient is φ = 75554377344.

The previous prime is 200102101981. The next prime is 200102102029. The reversal of 200102102020 is 20201201002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 200102101988 and 200102102006.

It is not an unprimeable number, because it can be changed into a prime (200102102029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845254 + ... + 1055773.

It is an arithmetic number, because the mean of its divisors is an integer number (9248501220).

Almost surely, 2^200102102020 is an apocalyptic number.

200102102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102102020 is an abundant number, since it is smaller than the sum of its proper divisors (243825956540).

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

200102102020 is a wasteful number, since it uses less digits than its factorization.

200102102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901332 (or 1901330 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200102102020 its reverse (20201201002), we get a palindrome (220303303022).

The spelling of 200102102020 in words is "two hundred billion, one hundred two million, one hundred two thousand, twenty".