200011100021001 has 12 divisors (see below), whose sum is σ = 296713163395012. Its totient is φ = 129736929743136.

The previous prime is 200011100020993. The next prime is 200011100021011. The reversal of 200011100021001 is 100120001110002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 181005380222976 + 19005719798025 = 13453824^2 + 4359555^2 .

It is not a de Polignac number, because 200011100021001 - 2³ = 200011100020993 is a prime.

It is a super-2 number, since 2×200011100021001² (a number of 29 digits) contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200011100021011) 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, 300316966666 + ... + 300316967331.

Almost surely, 2^{200011100021001} is an apocalyptic number.

It is an amenable number.

200011100021001 is a deficient number, since it is larger than the sum of its proper divisors (96702063374011).

200011100021001 is a wasteful number, since it uses less digits than its factorization.

200011100021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600633934040 (or 600633934037 counting only the distinct ones).

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

Adding to 200011100021001 its reverse (100120001110002), we get a palindrome (300131101131003).

It can be divided in two parts, 20001110002 and 1001, that multiplied together give a palindrome (20021111112002).

The spelling of 200011100021001 in words is "two hundred trillion, eleven billion, one hundred million, twenty-one thousand, one".