203221231000 has 32 divisors (see below), whose sum is σ = 475537682880. Its totient is φ = 81288492000.

The previous prime is 203221230973. The next prime is 203221231019. The reversal of 203221231000 is 132122302.

It is a super-2 number, since 2×203221231000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101609616 + ... + 101611615.

It is an arithmetic number, because the mean of its divisors is an integer number (14860552590).

Almost surely, 2^203221231000 is an apocalyptic number.

203221231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203221231000 is an abundant number, since it is smaller than the sum of its proper divisors (272316451880).

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

203221231000 is a wasteful number, since it uses less digits than its factorization.

203221231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203221252 (or 203221238 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 203221231000 its reverse (132122302), we get a palindrome (203353353302).

The spelling of 203221231000 in words is "two hundred three billion, two hundred twenty-one million, two hundred thirty-one thousand".