203021133100 has 72 divisors (see below), whose sum is σ = 451114126848. Its totient is φ = 79264852800.

The previous prime is 203021133089. The next prime is 203021133157. The reversal of 203021133100 is 1331120302.

It is a super-2 number, since 2×203021133100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6481677 + ... + 6512923.

It is an arithmetic number, because the mean of its divisors is an integer number (6265473984).

Almost surely, 2^203021133100 is an apocalyptic number.

203021133100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203021133100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225557063424).

203021133100 is an abundant number, since it is smaller than the sum of its proper divisors (248092993748).

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

203021133100 is a wasteful number, since it uses less digits than its factorization.

203021133100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32815 (or 32808 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 203021133100 its reverse (1331120302), we get a palindrome (204352253402).

The spelling of 203021133100 in words is "two hundred three billion, twenty-one million, one hundred thirty-three thousand, one hundred".