21201200202211 has 8 divisors (see below), whose sum is σ = 21331510490880. Its totient is φ = 21070892859912.

The previous prime is 21201200202209. The next prime is 21201200202223. The reversal of 21201200202211 is 11220200210212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21201200202211 - 2¹ = 21201200202209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201200202911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14688570 + ... + 16067248.

It is an arithmetic number, because the mean of its divisors is an integer number (2666438811360).

Almost surely, 2^{21201200202211} is an apocalyptic number.

21201200202211 is a deficient number, since it is larger than the sum of its proper divisors (130310288669).

21201200202211 is a wasteful number, since it uses less digits than its factorization.

21201200202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473185.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21201200202211 its reverse (11220200210212), we get a palindrome (32421400412423).

The spelling of 21201200202211 in words is "twenty-one trillion, two hundred one billion, two hundred million, two hundred two thousand, two hundred eleven".