203011020020 has 24 divisors (see below), whose sum is σ = 426351076200. Its totient is φ = 81199087232.

The previous prime is 203011020007. The next prime is 203011020061. The reversal of 203011020020 is 20020110302.

It is a happy number.

203011020020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 151691554576 + 51319465444 = 389476^2 + 226538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203011019983 and 203011020010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12155 + ... + 637314.

It is an arithmetic number, because the mean of its divisors is an integer number (17764628175).

Almost surely, 2^203011020020 is an apocalyptic number.

203011020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203011020020 is an abundant number, since it is smaller than the sum of its proper divisors (223340056180).

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

203011020020 is a wasteful number, since it uses less digits than its factorization.

203011020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665107 (or 665105 counting only the distinct ones).

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

Adding to 203011020020 its reverse (20020110302), we get a palindrome (223031130322).

The spelling of 203011020020 in words is "two hundred three billion, eleven million, twenty thousand, twenty".