10001200200021 has 16 divisors (see below), whose sum is σ = 15294547499520. Its totient is φ = 6452387225280.

The previous prime is 10001200200007. The next prime is 10001200200029. The reversal of 10001200200021 is 12000200210001.

10001200200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-10001200200021 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10001200199976 and 10001200200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001200200029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5974431780 + ... + 5974433453.

It is an arithmetic number, because the mean of its divisors is an integer number (955909218720).

Almost surely, 2^{10001200200021} is an apocalyptic number.

It is an amenable number.

10001200200021 is a deficient number, since it is larger than the sum of its proper divisors (5293347299499).

10001200200021 is a wasteful number, since it uses less digits than its factorization.

10001200200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948865273 (or 11948865267 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10001200200021 its reverse (12000200210001), we get a palindrome (22001400410022).

The spelling of 10001200200021 in words is "ten trillion, one billion, two hundred million, two hundred thousand, twenty-one".