3312221321 has 4 divisors (see below), whose sum is σ = 3317143572. Its totient is φ = 3307299072.

The previous prime is 3312221281. The next prime is 3312221327. The reversal of 3312221321 is 1231222133.

3312221321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231222133 = 31 ⋅39716843.

It can be written as a sum of positive squares in 2 ways, for example, as 469198921 + 2843022400 = 21661^2 + 53320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3312221321 - 2¹⁴ = 3312204937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3312221293 and 3312221302.

It is not an unprimeable number, because it can be changed into a prime (3312221327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2460116 + ... + 2461461.

It is an arithmetic number, because the mean of its divisors is an integer number (829285893).

Almost surely, 2^3312221321 is an apocalyptic number.

It is an amenable number.

3312221321 is a deficient number, since it is larger than the sum of its proper divisors (4922251).

3312221321 is an equidigital number, since it uses as much as digits as its factorization.

3312221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922250.

The product of its digits is 432, while the sum is 20.

The square root of 3312221321 is about 57551.9011067402. The cubic root of 3312221321 is about 1490.6411847874.

Adding to 3312221321 its reverse (1231222133), we get a palindrome (4543443454).

It can be divided in two parts, 331222132 and 1, that added together give a palindrome (331222133).

The spelling of 3312221321 in words is "three billion, three hundred twelve million, two hundred twenty-one thousand, three hundred twenty-one".