3212311221 has 12 divisors (see below), whose sum is σ = 5302863072. Its totient is φ = 1835606376.

The previous prime is 3212311213. The next prime is 3212311241. The reversal of 3212311221 is 1221132123.

It is not a de Polignac number, because 3212311221 - 2³ = 3212311213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3212311194 and 3212311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3212311241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25494471 + ... + 25494596.

It is an arithmetic number, because the mean of its divisors is an integer number (441905256).

Almost surely, 2^3212311221 is an apocalyptic number.

It is an amenable number.

3212311221 is a deficient number, since it is larger than the sum of its proper divisors (2090551851).

3212311221 is a wasteful number, since it uses less digits than its factorization.

3212311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50989080 (or 50989077 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 3212311221 is about 56677.2548823600. The cubic root of 3212311221 is about 1475.4999697036.

Adding to 3212311221 its reverse (1221132123), we get a palindrome (4433443344).

The spelling of 3212311221 in words is "three billion, two hundred twelve million, three hundred eleven thousand, two hundred twenty-one".