1020201320 has 32 divisors (see below), whose sum is σ = 2369502720. Its totient is φ = 394916160.

The previous prime is 1020201311. The next prime is 1020201341. The reversal of 1020201320 is 231020201.

It is a happy number.

1020201320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410132 + ... + 412611.

It is an arithmetic number, because the mean of its divisors is an integer number (74046960).

Almost surely, 2^1020201320 is an apocalyptic number.

1020201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020201320 is an abundant number, since it is smaller than the sum of its proper divisors (1349301400).

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

1020201320 is a wasteful number, since it uses less digits than its factorization.

1020201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822785 (or 822781 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1020201320 is about 31940.5904766959. The cubic root of 1020201320 is about 1006.6889317669.

Adding to 1020201320 its reverse (231020201), we get a palindrome (1251221521).

The spelling of 1020201320 in words is "one billion, twenty million, two hundred one thousand, three hundred twenty".