3311241221 has 4 divisors (see below), whose sum is σ = 3392003244. Its totient is φ = 3230479200.

The previous prime is 3311241211. The next prime is 3311241233. The reversal of 3311241221 is 1221421133.

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 1463445025 + 1847796196 = 38255^2 + 42986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3311241221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3311241193 and 3311241202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3311241211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40380950 + ... + 40381031.

It is an arithmetic number, because the mean of its divisors is an integer number (848000811).

Almost surely, 2^3311241221 is an apocalyptic number.

It is an amenable number.

3311241221 is a deficient number, since it is larger than the sum of its proper divisors (80762023).

3311241221 is an equidigital number, since it uses as much as digits as its factorization.

3311241221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80762022.

The product of its digits is 288, while the sum is 20.

The square root of 3311241221 is about 57543.3855538584. The cubic root of 3311241221 is about 1490.4941413171.

Adding to 3311241221 its reverse (1221421133), we get a palindrome (4532662354).

The spelling of 3311241221 in words is "three billion, three hundred eleven million, two hundred forty-one thousand, two hundred twenty-one".