211102212221 has 8 divisors (see below), whose sum is σ = 211943160000. Its totient is φ = 210262913280.

The previous prime is 211102212143. The next prime is 211102212253. The reversal of 211102212221 is 122212201112.

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-211102212221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211102212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102212721) 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, 155321 + ... + 668078.

It is an arithmetic number, because the mean of its divisors is an integer number (26492895000).

Almost surely, 2^211102212221 is an apocalyptic number.

It is an amenable number.

211102212221 is a deficient number, since it is larger than the sum of its proper divisors (840947779).

211102212221 is an equidigital number, since it uses as much as digits as its factorization.

211102212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824419.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211102212221 its reverse (122212201112), we get a palindrome (333314413333).

The spelling of 211102212221 in words is "two hundred eleven billion, one hundred two million, two hundred twelve thousand, two hundred twenty-one".