3331312221 has 8 divisors (see below), whose sum is σ = 4517033760. Its totient is φ = 2183232752.

The previous prime is 3331312219. The next prime is 3331312253. The reversal of 3331312221 is 1222131333.

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 3331312221 - 2¹ = 3331312219 is a prime.

It is a super-2 number, since 2×3331312221² = 22195282227567905682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3331314221) 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, 9410310 + ... + 9410663.

It is an arithmetic number, because the mean of its divisors is an integer number (564629220).

Almost surely, 2^3331312221 is an apocalyptic number.

It is an amenable number.

3331312221 is a deficient number, since it is larger than the sum of its proper divisors (1185721539).

3331312221 is a wasteful number, since it uses less digits than its factorization.

3331312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18821035.

The product of its digits is 648, while the sum is 21.

The square root of 3331312221 is about 57717.5209186950. The cubic root of 3331312221 is about 1493.4996070648.

Adding to 3331312221 its reverse (1222131333), we get a palindrome (4553443554).

The spelling of 3331312221 in words is "three billion, three hundred thirty-one million, three hundred twelve thousand, two hundred twenty-one".