203212120 has 32 divisors (see below), whose sum is σ = 458716320. Its totient is φ = 81020160.

The previous prime is 203212117. The next prime is 203212133. The reversal of 203212120 is 21212302.

It is a self number, because there is not a number n which added to its sum of digits gives 203212120.

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, 4405 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (14334885).

Almost surely, 2^203212120 is an apocalyptic number.

203212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203212120 is an abundant number, since it is smaller than the sum of its proper divisors (255504200).

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

203212120 is a wasteful number, since it uses less digits than its factorization.

203212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16555 (or 16551 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 203212120 is about 14255.2488578769. The cubic root of 203212120 is about 587.9177002373.

Adding to 203212120 its reverse (21212302), we get a palindrome (224424422).

The spelling of 203212120 in words is "two hundred three million, two hundred twelve thousand, one hundred twenty".