3313323221 has 4 divisors (see below), whose sum is σ = 3568194252. Its totient is φ = 3058452192.

The previous prime is 3313323191. The next prime is 3313323257. The reversal of 3313323221 is 1223233133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1223233133 = 137 ⋅8928709.

It can be written as a sum of positive squares in 2 ways, for example, as 395811025 + 2917512196 = 19895^2 + 54014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3313323221 - 2²² = 3309128917 is a prime.

It is a super-2 number, since 2×3313323221² = 21956221533635629682, 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 (3313323521) 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, 127435496 + ... + 127435521.

It is an arithmetic number, because the mean of its divisors is an integer number (892048563).

Almost surely, 2^3313323221 is an apocalyptic number.

It is an amenable number.

3313323221 is a deficient number, since it is larger than the sum of its proper divisors (254871031).

3313323221 is a wasteful number, since it uses less digits than its factorization.

3313323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254871030.

The product of its digits is 1944, while the sum is 23.

The square root of 3313323221 is about 57561.4734088696. The cubic root of 3313323221 is about 1490.8064671614.

Adding to 3313323221 its reverse (1223233133), we get a palindrome (4536556354).

The spelling of 3313323221 in words is "three billion, three hundred thirteen million, three hundred twenty-three thousand, two hundred twenty-one".