211103330321 has 8 divisors (see below), whose sum is σ = 229685781864. Its totient is φ = 192855697920.

The previous prime is 211103330297. The next prime is 211103330323. The reversal of 211103330321 is 123033301112.

It can be written as a sum of positive squares in 4 ways, for example, as 4564894096 + 206538436225 = 67564^2 + 454465^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211103330321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211103330293 and 211103330302.

It is not an unprimeable number, because it can be changed into a prime (211103330323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83703470 + ... + 83705991.

It is an arithmetic number, because the mean of its divisors is an integer number (28710722733).

Almost surely, 2^211103330321 is an apocalyptic number.

It is an amenable number.

211103330321 is a deficient number, since it is larger than the sum of its proper divisors (18582451543).

211103330321 is a wasteful number, since it uses less digits than its factorization.

211103330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167409571.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 211103330321 its reverse (123033301112), we get a palindrome (334136631433).

The spelling of 211103330321 in words is "two hundred eleven billion, one hundred three million, three hundred thirty thousand, three hundred twenty-one".