203220120 has 32 divisors (see below), whose sum is σ = 609660720. Its totient is φ = 54192000.

The previous prime is 203220119. The next prime is 203220163. The reversal of 203220120 is 21022302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 203220096 and 203220105.

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, 846631 + ... + 846870.

Almost surely, 2^203220120 is an apocalyptic number.

203220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203220120 is an abundant number, since it is smaller than the sum of its proper divisors (406440600).

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

203220120 is a wasteful number, since it uses less digits than its factorization.

203220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693515 (or 1693511 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 203220120 is about 14255.5294535138. The cubic root of 203220120 is about 587.9254151313.

Adding to 203220120 its reverse (21022302), we get a palindrome (224242422).

The spelling of 203220120 in words is "two hundred three million, two hundred twenty thousand, one hundred twenty".