21203101320211 has 8 divisors (see below), whose sum is σ = 21206142313200. Its totient is φ = 21200060562720.

The previous prime is 21203101320077. The next prime is 21203101320241. The reversal of 21203101320211 is 11202310130212.

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 21203101320211 - 2¹¹ = 21203101318163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21203101320241) 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 7 ways as a sum of consecutive naturals, for example, 249820300 + ... + 249905158.

It is an arithmetic number, because the mean of its divisors is an integer number (2650767789150).

Almost surely, 2^{21203101320211} is an apocalyptic number.

21203101320211 is a deficient number, since it is larger than the sum of its proper divisors (3040992989).

21203101320211 is a wasteful number, since it uses less digits than its factorization.

21203101320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117749.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21203101320211 its reverse (11202310130212), we get a palindrome (32405411450423).

The spelling of 21203101320211 in words is "twenty-one trillion, two hundred three billion, one hundred one million, three hundred twenty thousand, two hundred eleven".