3213223221 has 8 divisors (see below), whose sum is σ = 4613859040. Its totient is φ = 1977368112.

The previous prime is 3213223217. The next prime is 3213223231. The reversal of 3213223221 is 1223223123.

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 3213223221 - 2² = 3213223217 is a prime.

It is a super-2 number, since 2×3213223221² = 20649606935947229682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213223231) 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, 41195131 + ... + 41195208.

It is an arithmetic number, because the mean of its divisors is an integer number (576732380).

Almost surely, 2^3213223221 is an apocalyptic number.

It is an amenable number.

3213223221 is a deficient number, since it is larger than the sum of its proper divisors (1400635819).

3213223221 is a wasteful number, since it uses less digits than its factorization.

3213223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82390355.

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

The square root of 3213223221 is about 56685.2998668967. The cubic root of 3213223221 is about 1475.6395917755.

Adding to 3213223221 its reverse (1223223123), we get a palindrome (4436446344).

The spelling of 3213223221 in words is "three billion, two hundred thirteen million, two hundred twenty-three thousand, two hundred twenty-one".