3311221213 has 4 divisors (see below), whose sum is σ = 3391982748. Its totient is φ = 3230459680.

The previous prime is 3311221201. The next prime is 3311221301. The reversal of 3311221213 is 3121221133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1734972409 + 1576248804 = 41653^2 + 39702^2 .

It is a cyclic number.

It is not a de Polignac number, because 3311221213 - 2¹³ = 3311213021 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 (3311221313) 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 3 ways as a sum of consecutive naturals, for example, 40380706 + ... + 40380787.

It is an arithmetic number, because the mean of its divisors is an integer number (847995687).

Almost surely, 2^3311221213 is an apocalyptic number.

It is an amenable number.

3311221213 is a deficient number, since it is larger than the sum of its proper divisors (80761535).

3311221213 is an equidigital number, since it uses as much as digits as its factorization.

3311221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80761534.

The product of its digits is 216, while the sum is 19.

The square root of 3311221213 is about 57543.2117021634. The cubic root of 3311221213 is about 1490.4911392337.

Adding to 3311221213 its reverse (3121221133), we get a palindrome (6432442346).

The spelling of 3311221213 in words is "three billion, three hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".