100550206521 has 32 divisors (see below), whose sum is σ = 149369149440. Its totient is φ = 66851038800.

The previous prime is 100550206487. The next prime is 100550206541. The reversal of 100550206521 is 125602055001.

100550206521 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 5 + 0 + 2 + 0 + 652 + 1 = 666.

It is not a de Polignac number, because 100550206521 - 2³⁰ = 99476464697 is a prime.

It is a super-2 number, since 2×100550206521² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (100550206541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36816726 + ... + 36819456.

It is an arithmetic number, because the mean of its divisors is an integer number (4667785920).

Almost surely, 2^100550206521 is an apocalyptic number.

It is an amenable number.

100550206521 is a deficient number, since it is larger than the sum of its proper divisors (48818942919).

100550206521 is a wasteful number, since it uses less digits than its factorization.

100550206521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5948 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 100550206521 in words is "one hundred billion, five hundred fifty million, two hundred six thousand, five hundred twenty-one".