203320221012 has 48 divisors (see below), whose sum is σ = 528349651200. Its totient is φ = 67616144640.

The previous prime is 203320220993. The next prime is 203320221059. The reversal of 203320221012 is 210122023302.

It is a super-2 number, since 2×203320221012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 2137437 + ... + 2230532.

It is an arithmetic number, because the mean of its divisors is an integer number (11007284400).

Almost surely, 2^203320221012 is an apocalyptic number.

It is an amenable number.

203320221012 is an abundant number, since it is smaller than the sum of its proper divisors (325029430188).

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

203320221012 is a wasteful number, since it uses less digits than its factorization.

203320221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368413 (or 4368405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 203320221012 its reverse (210122023302), we get a palindrome (413442244314).

The spelling of 203320221012 in words is "two hundred three billion, three hundred twenty million, two hundred twenty-one thousand, twelve".