3345443221 has 16 divisors (see below), whose sum is σ = 3608236800. Its totient is φ = 3091765248.

The previous prime is 3345443207. The next prime is 3345443237. The reversal of 3345443221 is 1223445433.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3345443221 - 2¹⁷ = 3345312149 is a prime.

It is a super-2 number, since 2×3345443221² = 22383980689869709682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345443201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273525 + ... + 285493.

It is an arithmetic number, because the mean of its divisors is an integer number (225514800).

Almost surely, 2^3345443221 is an apocalyptic number.

It is an amenable number.

3345443221 is a deficient number, since it is larger than the sum of its proper divisors (262793579).

3345443221 is a wasteful number, since it uses less digits than its factorization.

3345443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348.

The product of its digits is 34560, while the sum is 31.

The square root of 3345443221 is about 57839.8065435907. The cubic root of 3345443221 is about 1495.6083728814.

Adding to 3345443221 its reverse (1223445433), we get a palindrome (4568888654).

The spelling of 3345443221 in words is "three billion, three hundred forty-five million, four hundred forty-three thousand, two hundred twenty-one".