200101000021 has 8 divisors (see below), whose sum is σ = 216103852440. Its totient is φ = 184185357312.

The previous prime is 200101000013. The next prime is 200101000031. The reversal of 200101000021 is 120000101002.

It can be written as a sum of positive squares in 4 ways, for example, as 19236996 + 200081763025 = 4386^2 + 447305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200101000021 - 2³ = 200101000013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200100999968 and 200101000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101000031) 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 7 ways as a sum of consecutive naturals, for example, 21797656 + ... + 21806833.

It is an arithmetic number, because the mean of its divisors is an integer number (27012981555).

Almost surely, 2^200101000021 is an apocalyptic number.

It is an amenable number.

200101000021 is a deficient number, since it is larger than the sum of its proper divisors (16002852419).

200101000021 is a wasteful number, since it uses less digits than its factorization.

200101000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43604855.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 200101000021 its reverse (120000101002), we get a palindrome (320101101023).

The spelling of 200101000021 in words is "two hundred billion, one hundred one million, twenty-one", and thus it is an aban number.