203212225220 has 48 divisors (see below), whose sum is σ = 447873995520. Its totient is φ = 77301307776.

The previous prime is 203212225199. The next prime is 203212225231. The reversal of 203212225220 is 22522212302.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197200 + ... + 1356359.

It is an arithmetic number, because the mean of its divisors is an integer number (9330708240).

Almost surely, 2^203212225220 is an apocalyptic number.

203212225220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203212225220 is an abundant number, since it is smaller than the sum of its proper divisors (244661770300).

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

203212225220 is a wasteful number, since it uses less digits than its factorization.

203212225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553764 (or 2553762 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 203212225220 its reverse (22522212302), we get a palindrome (225734437522).

The spelling of 203212225220 in words is "two hundred three billion, two hundred twelve million, two hundred twenty-five thousand, two hundred twenty".