321122223 has 36 divisors (see below), whose sum is σ = 485077320. Its totient is φ = 204659136.

The previous prime is 321122183. The next prime is 321122233. The reversal of 321122223 is 322221123.

321122223 is a `hidden beast` number, since 321 + 122 + 223 = 666.

It is not a de Polignac number, because 321122223 - 2¹⁸ = 320860079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321122196 and 321122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321122233) 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 35 ways as a sum of consecutive naturals, for example, 825313 + ... + 825701.

It is an arithmetic number, because the mean of its divisors is an integer number (13474370).

Almost surely, 2^321122223 is an apocalyptic number.

321122223 is a deficient number, since it is larger than the sum of its proper divisors (163955097).

321122223 is a wasteful number, since it uses less digits than its factorization.

321122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 496 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 321122223 is about 17919.8834538621. The cubic root of 321122223 is about 684.7890184416.

Adding to 321122223 its reverse (322221123), we get a palindrome (643343346).

The spelling of 321122223 in words is "three hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".