203003220120 has 64 divisors (see below), whose sum is σ = 609284665440. Its totient is φ = 54109747200.

The previous prime is 203003220109. The next prime is 203003220127. The reversal of 203003220120 is 21022300302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 203003220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203003220127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114321 + ... + 647360.

Almost surely, 2^203003220120 is an apocalyptic number.

203003220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203003220120 is an abundant number, since it is smaller than the sum of its proper divisors (406281445320).

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

203003220120 is a wasteful number, since it uses less digits than its factorization.

203003220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763916 (or 763912 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 203003220120 its reverse (21022300302), we get a palindrome (224025520422).

The spelling of 203003220120 in words is "two hundred three billion, three million, two hundred twenty thousand, one hundred twenty".