221300321211 has 40 divisors (see below), whose sum is σ = 342236545200. Its totient is φ = 142340950080.

The previous prime is 221300321161. The next prime is 221300321219. The reversal of 221300321211 is 112123003122.

221300321211 is a `hidden beast` number, since 2 + 2 + 130 + 0 + 321 + 211 = 666.

It is not a de Polignac number, because 221300321211 - 2¹⁸ = 221300059067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221300321219) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3209860 + ... + 3278078.

It is an arithmetic number, because the mean of its divisors is an integer number (8555913630).

Almost surely, 2^221300321211 is an apocalyptic number.

221300321211 is a deficient number, since it is larger than the sum of its proper divisors (120936223989).

221300321211 is a wasteful number, since it uses less digits than its factorization.

221300321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69641 (or 69632 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221300321211 its reverse (112123003122), we get a palindrome (333423324333).

The spelling of 221300321211 in words is "two hundred twenty-one billion, three hundred million, three hundred twenty-one thousand, two hundred eleven".