1002201020 has 24 divisors (see below), whose sum is σ = 2105281584. Its totient is φ = 400754816.

The previous prime is 1002200987. The next prime is 1002201041. The reversal of 1002201020 is 201022001.

It is a junction number, because it is equal to n+sod(n) for n = 1002200989 and 1002201007.

It is a congruent number.

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, 83519 + ... + 94761.

It is an arithmetic number, because the mean of its divisors is an integer number (87720066).

Almost surely, 2^1002201020 is an apocalyptic number.

1002201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002201020 is an abundant number, since it is smaller than the sum of its proper divisors (1103080564).

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

1002201020 is a wasteful number, since it uses less digits than its factorization.

1002201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15709 (or 15707 counting only the distinct ones).

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

The square root of 1002201020 is about 31657.5586550827. The cubic root of 1002201020 is about 1000.7331357140.

Adding to 1002201020 its reverse (201022001), we get a palindrome (1203223021).

The spelling of 1002201020 in words is "one billion, two million, two hundred one thousand, twenty".