211321201303 has 4 divisors (see below), whose sum is σ = 217032585160. Its totient is φ = 205609817448.

The previous prime is 211321201261. The next prime is 211321201339. The reversal of 211321201303 is 303102123112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211321201303 - 2¹⁷ = 211321070231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321201703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2855691873 + ... + 2855691946.

It is an arithmetic number, because the mean of its divisors is an integer number (54258146290).

Almost surely, 2^211321201303 is an apocalyptic number.

211321201303 is a deficient number, since it is larger than the sum of its proper divisors (5711383857).

211321201303 is an equidigital number, since it uses as much as digits as its factorization.

211321201303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711383856.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211321201303 its reverse (303102123112), we get a palindrome (514423324415).

The spelling of 211321201303 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred one thousand, three hundred three".