3351581221 has 8 divisors (see below), whose sum is σ = 3361277088. Its totient is φ = 3341898000.

The previous prime is 3351581197. The next prime is 3351581227. The reversal of 3351581221 is 1221851533.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3351581221 - 2⁹ = 3351580709 is a prime.

It is a super-2 number, since 2×3351581221² = 22466193361919701682, 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 (3351581227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793806 + ... + 798016.

It is an arithmetic number, because the mean of its divisors is an integer number (420159636).

Almost surely, 2^3351581221 is an apocalyptic number.

It is an amenable number.

3351581221 is a deficient number, since it is larger than the sum of its proper divisors (9695867).

3351581221 is a wasteful number, since it uses less digits than its factorization.

3351581221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323.

The product of its digits is 7200, while the sum is 31.

The square root of 3351581221 is about 57892.8425714267. The cubic root of 3351581221 is about 1496.5224954642.

The spelling of 3351581221 in words is "three billion, three hundred fifty-one million, five hundred eighty-one thousand, two hundred twenty-one".