203321010012 has 12 divisors (see below), whose sum is σ = 474415690056. Its totient is φ = 67773670000.

The previous prime is 203321009977. The next prime is 203321010017. The reversal of 203321010012 is 210010123302.

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

It is a super-2 number, since 2×203321010012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203321009973 and 203321010000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203321010017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8471708739 + ... + 8471708762.

It is an arithmetic number, because the mean of its divisors is an integer number (39534640838).

Almost surely, 2^203321010012 is an apocalyptic number.

It is an amenable number.

203321010012 is an abundant number, since it is smaller than the sum of its proper divisors (271094680044).

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

203321010012 is a wasteful number, since it uses less digits than its factorization.

203321010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16943417508 (or 16943417506 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 203321010012 its reverse (210010123302), we get a palindrome (413331133314).

The spelling of 203321010012 in words is "two hundred three billion, three hundred twenty-one million, ten thousand, twelve".