203421103444 has 96 divisors (see below), whose sum is σ = 396628033536. Its totient is φ = 90711653760.

The previous prime is 203421103441. The next prime is 203421103451. The reversal of 203421103444 is 444301124302.

It is a super-2 number, since 2×203421103444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203421103441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38914759 + ... + 38919985.

It is an arithmetic number, because the mean of its divisors is an integer number (4131542016).

Almost surely, 2^203421103444 is an apocalyptic number.

It is an amenable number.

203421103444 is a deficient number, since it is larger than the sum of its proper divisors (193206930092).

203421103444 is a wasteful number, since it uses less digits than its factorization.

203421103444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5523 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 203421103444 its reverse (444301124302), we get a palindrome (647722227746).

The spelling of 203421103444 in words is "two hundred three billion, four hundred twenty-one million, one hundred three thousand, four hundred forty-four".