1020210020 has 24 divisors (see below), whose sum is σ = 2143996344.
Its totient is φ = 407787776.
The previous prime is 1020210019. The next prime is 1020210047. The reversal of 1020210020 is 200120201.
Adding to 1020210020 its reverse (200120201), we get a palindrome (1220330221).
It can be written as a sum of positive squares in 4 ways, for example, as 76983076 + 943226944 = 8774^2 + 30712^2
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 7 ways as a sum of consecutive naturals, for example, 10862 + ... + 46458.
It is an arithmetic number, because the mean of its divisors is an integer number (89333181).
Almost surely, 21020210020 is an apocalyptic number.
1020210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1020210020 is an abundant number, since it is smaller than the sum of its proper divisors (1123786324).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1020210020 is a wasteful number, since it uses less digits than its factorization.
1020210020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 37039 (or 37037 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 8.
The square root of 1020210020 is about 31940.7266667495.
The cubic root of 1020210020 is about 1006.6917933487.
The spelling of 1020210020 in words is "one billion, twenty million, two hundred ten thousand, twenty".