200021101100001 has 12 divisors (see below), whose sum is σ = 298239347877120. Its totient is φ = 129045871677240.

The previous prime is 200021101099991. The next prime is 200021101100011. The reversal of 200021101100001 is 100001101120002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200021101099991) and next prime (200021101100011).

It is not a de Polignac number, because 200021101100001 - 2⁵ = 200021101099969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200021101100011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358460754381 + ... + 358460754938.

It is an arithmetic number, because the mean of its divisors is an integer number (24853278989760).

Almost surely, 2^{200021101100001} is an apocalyptic number.

It is an amenable number.

200021101100001 is a deficient number, since it is larger than the sum of its proper divisors (98218246777119).

200021101100001 is a wasteful number, since it uses less digits than its factorization.

200021101100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716921509356 (or 716921509353 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 200021101100001 its reverse (100001101120002), we get a palindrome (300022202220003).

The spelling of 200021101100001 in words is "two hundred trillion, twenty-one billion, one hundred one million, one hundred thousand, one".