221311000211 has 8 divisors (see below), whose sum is σ = 256489208064. Its totient is φ = 187023380040.

The previous prime is 221311000187. The next prime is 221311000243. The reversal of 221311000211 is 112000113122.

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

It is not a de Polignac number, because 221311000211 - 2¹⁴ = 221310983827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221311000271) 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, 222646385 + ... + 222647378.

It is an arithmetic number, because the mean of its divisors is an integer number (32061151008).

Almost surely, 2^221311000211 is an apocalyptic number.

221311000211 is a deficient number, since it is larger than the sum of its proper divisors (35178207853).

221311000211 is an equidigital number, since it uses as much as digits as its factorization.

221311000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445293841.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 221311000211 its reverse (112000113122), we get a palindrome (333311113333).

The spelling of 221311000211 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred eleven", and thus it is an aban number.