21211303201 has 16 divisors (see below), whose sum is σ = 24389173440. Its totient is φ = 18244336320.

The previous prime is 21211303187. The next prime is 21211303229. The reversal of 21211303201 is 10230311212.

It is a cyclic number.

It is not a de Polignac number, because 21211303201 - 2¹⁹ = 21210778913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211303231) 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, 95911 + ... + 227203.

It is an arithmetic number, because the mean of its divisors is an integer number (1524323340).

Almost surely, 2^21211303201 is an apocalyptic number.

It is an amenable number.

21211303201 is a deficient number, since it is larger than the sum of its proper divisors (3177870239).

21211303201 is a wasteful number, since it uses less digits than its factorization.

21211303201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132096.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21211303201 its reverse (10230311212), we get a palindrome (31441614413).

The spelling of 21211303201 in words is "twenty-one billion, two hundred eleven million, three hundred three thousand, two hundred one".