211200201200021 has 48 divisors (see below), whose sum is σ = 252506331072000. Its totient is φ = 174653509353120.

The previous prime is 211200201200011. The next prime is 211200201200029. The reversal of 211200201200021 is 120002102002112.

It is not a de Polignac number, because 211200201200021 - 2¹⁸ = 211200200937877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211200201199969 and 211200201200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200201200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18168440 + ... + 27431598.

It is an arithmetic number, because the mean of its divisors is an integer number (5260548564000).

Almost surely, 2^{211200201200021} is an apocalyptic number.

It is an amenable number.

211200201200021 is a deficient number, since it is larger than the sum of its proper divisors (41306129871979).

211200201200021 is a wasteful number, since it uses less digits than its factorization.

211200201200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263334 (or 9263291 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211200201200021 its reverse (120002102002112), we get a palindrome (331202303202133).

The spelling of 211200201200021 in words is "two hundred eleven trillion, two hundred billion, two hundred one million, two hundred thousand, twenty-one".