10203002020 has 12 divisors (see below), whose sum is σ = 21426304284. Its totient is φ = 4081200800.

The previous prime is 10203001999. The next prime is 10203002039. The reversal of 10203002020 is 2020030201.

It can be written as a sum of positive squares in 2 ways, for example, as 6596038656 + 3606963364 = 81216^2 + 60058^2 .

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 = 10203001988 and 10203002006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255075031 + ... + 255075070.

It is an arithmetic number, because the mean of its divisors is an integer number (1785525357).

Almost surely, 2^10203002020 is an apocalyptic number.

10203002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10203002020 is an abundant number, since it is smaller than the sum of its proper divisors (11223302264).

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

10203002020 is a wasteful number, since it uses less digits than its factorization.

10203002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510150110 (or 510150108 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 10203002020 its reverse (2020030201), we get a palindrome (12223032221).

The spelling of 10203002020 in words is "ten billion, two hundred three million, two thousand, twenty".