1020201020 has 12 divisors (see below), whose sum is σ = 2142422184. Its totient is φ = 408080400.

The previous prime is 1020201019. The next prime is 1020201031. The reversal of 1020201020 is 201020201.

1020201020 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 = 1020200989 and 1020201007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25505006 + ... + 25505045.

It is an arithmetic number, because the mean of its divisors is an integer number (178535182).

Almost surely, 2^1020201020 is an apocalyptic number.

1020201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020201020 is an abundant number, since it is smaller than the sum of its proper divisors (1122221164).

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

1020201020 is a wasteful number, since it uses less digits than its factorization.

1020201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010060 (or 51010058 counting only the distinct ones).

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

The square root of 1020201020 is about 31940.5857804769. The cubic root of 1020201020 is about 1006.6888330913.

Adding to 1020201020 its reverse (201020201), we get a palindrome (1221221221).

The spelling of 1020201020 in words is "one billion, twenty million, two hundred one thousand, twenty".