203220201312 has 72 divisors (see below), whose sum is σ = 578288148984. Its totient is φ = 67695442944.

The previous prime is 203220201307. The next prime is 203220201319. The reversal of 203220201312 is 213102022302.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203220201319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206968 + ... + 670280.

It is an arithmetic number, because the mean of its divisors is an integer number (8031779847).

Almost surely, 2^203220201312 is an apocalyptic number.

It is an amenable number.

203220201312 is an abundant number, since it is smaller than the sum of its proper divisors (375067947672).

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

203220201312 is a wasteful number, since it uses less digits than its factorization.

203220201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464852 (or 464841 counting only the distinct ones).

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

Adding to 203220201312 its reverse (213102022302), we get a palindrome (416322223614).

The spelling of 203220201312 in words is "two hundred three billion, two hundred twenty million, two hundred one thousand, three hundred twelve".