100000200021 has 32 divisors (see below), whose sum is σ = 138198584832. Its totient is φ = 64275785280.

The previous prime is 100000199983. The next prime is 100000200059. The reversal of 100000200021 is 120002000001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100000199983) and next prime (100000200059).

It is not a de Polignac number, because 100000200021 - 2²⁹ = 99463329109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100000199982 and 100000200009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000200221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14782986 + ... + 14789748.

It is an arithmetic number, because the mean of its divisors is an integer number (4318705776).

Almost surely, 2^100000200021 is an apocalyptic number.

It is an amenable number.

100000200021 is a deficient number, since it is larger than the sum of its proper divisors (38198384811).

100000200021 is a wasteful number, since it uses less digits than its factorization.

100000200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 100000200021 its reverse (120002000001), we get a palindrome (220002200022).

The spelling of 100000200021 in words is "one hundred billion, two hundred thousand, twenty-one".