203220012 has 12 divisors (see below), whose sum is σ = 474180056. Its totient is φ = 67740000.

The previous prime is 203220007. The next prime is 203220041. The reversal of 203220012 is 210022302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 16935001 = 203220012 / (2 + 0 + 3 + 2 + 2 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 203220012.

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, 8467489 + ... + 8467512.

Almost surely, 2^203220012 is an apocalyptic number.

It is an amenable number.

203220012 is an abundant number, since it is smaller than the sum of its proper divisors (270960044).

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

203220012 is a wasteful number, since it uses less digits than its factorization.

203220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935008 (or 16935006 counting only the distinct ones).

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

The square root of 203220012 is about 14255.5256655095. The cubic root of 203220012 is about 587.9253109816.

Adding to 203220012 its reverse (210022302), we get a palindrome (413242314).

The spelling of 203220012 in words is "two hundred three million, two hundred twenty thousand, twelve".