3123232221 has 8 divisors (see below), whose sum is σ = 4164609280. Its totient is φ = 2082004992.

The previous prime is 3123232193. The next prime is 3123232241. The reversal of 3123232221 is 1222323213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3123232221 - 2²² = 3119037917 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 (3123232241) 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 7 ways as a sum of consecutive naturals, for example, 27060 + ... + 83538.

It is an arithmetic number, because the mean of its divisors is an integer number (520576160).

Almost surely, 2^3123232221 is an apocalyptic number.

It is an amenable number.

3123232221 is a deficient number, since it is larger than the sum of its proper divisors (1041377059).

3123232221 is a wasteful number, since it uses less digits than its factorization.

3123232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74915.

The product of its digits is 864, while the sum is 21.

The square root of 3123232221 is about 55885.8857047108. The cubic root of 3123232221 is about 1461.7331361920.

Adding to 3123232221 its reverse (1222323213), we get a palindrome (4345555434).

The spelling of 3123232221 in words is "three billion, one hundred twenty-three million, two hundred thirty-two thousand, two hundred twenty-one".