200100021001 has 4 divisors (see below), whose sum is σ = 200220347392. Its totient is φ = 199979694612.

The previous prime is 200100020977. The next prime is 200100021013. The reversal of 200100021001 is 100120001002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200100021001 - 2¹¹ = 200100018953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200100021101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60160701 + ... + 60164026.

It is an arithmetic number, because the mean of its divisors is an integer number (50055086848).

Almost surely, 2^200100021001 is an apocalyptic number.

It is an amenable number.

200100021001 is a deficient number, since it is larger than the sum of its proper divisors (120326391).

200100021001 is a wasteful number, since it uses less digits than its factorization.

200100021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120326390.

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

Adding to 200100021001 its reverse (100120001002), we get a palindrome (300220022003).

The spelling of 200100021001 in words is "two hundred billion, one hundred million, twenty-one thousand, one".