211221322323 has 24 divisors (see below), whose sum is σ = 309771470400. Its totient is φ = 127924861680.

The previous prime is 211221322307. The next prime is 211221322363. The reversal of 211221322323 is 323223122112.

211221322323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211221322323 - 2⁴ = 211221322307 is a prime.

It is a super-2 number, since 2×211221322323² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221322293 and 211221322302.

It is not an unprimeable number, because it can be changed into a prime (211221322363) 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 23 ways as a sum of consecutive naturals, for example, 330208 + ... + 729026.

It is an arithmetic number, because the mean of its divisors is an integer number (12907144600).

Almost surely, 2^211221322323 is an apocalyptic number.

211221322323 is a deficient number, since it is larger than the sum of its proper divisors (98550148077).

211221322323 is a wasteful number, since it uses less digits than its factorization.

211221322323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400303 (or 400292 counting only the distinct ones).

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

Adding to 211221322323 its reverse (323223122112), we get a palindrome (534444444435).

The spelling of 211221322323 in words is "two hundred eleven billion, two hundred twenty-one million, three hundred twenty-two thousand, three hundred twenty-three".