203221023020 has 12 divisors (see below), whose sum is σ = 426764148384. Its totient is φ = 81288409200.

The previous prime is 203221023017. The next prime is 203221023067. The reversal of 203221023020 is 20320122302.

It is a self number, because there is not a number n which added to its sum of digits gives 203221023020.

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, 5080525556 + ... + 5080525595.

It is an arithmetic number, because the mean of its divisors is an integer number (35563679032).

Almost surely, 2^203221023020 is an apocalyptic number.

203221023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203221023020 is an abundant number, since it is smaller than the sum of its proper divisors (223543125364).

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

203221023020 is a wasteful number, since it uses less digits than its factorization.

203221023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161051160 (or 10161051158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 203221023020 its reverse (20320122302), we get a palindrome (223541145322).

The spelling of 203221023020 in words is "two hundred three billion, two hundred twenty-one million, twenty-three thousand, twenty".