211326446221 has 16 divisors (see below), whose sum is σ = 234009451008. Its totient is φ = 189222778800.

The previous prime is 211326446209. The next prime is 211326446251. The reversal of 211326446221 is 122644623112.

It is not a de Polignac number, because 211326446221 - 2¹⁷ = 211326315149 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 (211326446251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7845186 + ... + 7872076.

It is an arithmetic number, because the mean of its divisors is an integer number (14625590688).

Almost surely, 2^211326446221 is an apocalyptic number.

It is an amenable number.

211326446221 is a deficient number, since it is larger than the sum of its proper divisors (22683004787).

211326446221 is a wasteful number, since it uses less digits than its factorization.

211326446221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37632.

The product of its digits is 27648, while the sum is 34.

The spelling of 211326446221 in words is "two hundred eleven billion, three hundred twenty-six million, four hundred forty-six thousand, two hundred twenty-one".