203220331212 has 96 divisors (see below), whose sum is σ = 498628267200. Its totient is φ = 64332398592.

The previous prime is 203220331211. The next prime is 203220331213. The reversal of 203220331212 is 212133022302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203220331211) and next prime (203220331213).

It is not an unprimeable number, because it can be changed into a prime (203220331211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5960598 + ... + 5994594.

It is an arithmetic number, because the mean of its divisors is an integer number (5194044450).

Almost surely, 2^203220331212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203220331212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249314133600).

203220331212 is an abundant number, since it is smaller than the sum of its proper divisors (295407935988).

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

203220331212 is a wasteful number, since it uses less digits than its factorization.

203220331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34315 (or 34313 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203220331212 its reverse (212133022302), we get a palindrome (415353353514).

The spelling of 203220331212 in words is "two hundred three billion, two hundred twenty million, three hundred thirty-one thousand, two hundred twelve".