100543323321 has 72 divisors (see below), whose sum is σ = 181213231680. Its totient is φ = 52552245312.

The previous prime is 100543323319. The next prime is 100543323347. The reversal of 100543323321 is 123323345001.

100543323321 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 4 + 332 + 3 + 321 = 666.

It is not a de Polignac number, because 100543323321 - 2¹ = 100543323319 is a prime.

It is a super-2 number, since 2×100543323321² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100543321321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 583326 + ... + 735768.

It is an arithmetic number, because the mean of its divisors is an integer number (2516850440).

Almost surely, 2^100543323321 is an apocalyptic number.

It is an amenable number.

100543323321 is a deficient number, since it is larger than the sum of its proper divisors (80669908359).

100543323321 is a wasteful number, since it uses less digits than its factorization.

100543323321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152523 (or 152501 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 100543323321 its reverse (123323345001), we get a palindrome (223866668322).

The spelling of 100543323321 in words is "one hundred billion, five hundred forty-three million, three hundred twenty-three thousand, three hundred twenty-one".