221323223211 has 16 divisors (see below), whose sum is σ = 296138073600. Its totient is φ = 147029202368.

The previous prime is 221323223201. The next prime is 221323223213. The reversal of 221323223211 is 112322323122.

221323223211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221323223211 - 2⁵ = 221323223179 is a prime.

It is a super-2 number, since 2×221323223211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221323223213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397095 + ... + 1547423.

It is an arithmetic number, because the mean of its divisors is an integer number (18508629600).

Almost surely, 2^221323223211 is an apocalyptic number.

221323223211 is a deficient number, since it is larger than the sum of its proper divisors (74814850389).

221323223211 is a wasteful number, since it uses less digits than its factorization.

221323223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152058.

The product of its digits is 1728, while the sum is 24.

Adding to 221323223211 its reverse (112322323122), we get a palindrome (333645546333).

The spelling of 221323223211 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred eleven".