3321322221 has 16 divisors (see below), whose sum is σ = 5156555904. Its totient is φ = 1862088384.

The previous prime is 3321322217. The next prime is 3321322271. The reversal of 3321322221 is 1222231233.

It is a happy number.

It is not a de Polignac number, because 3321322221 - 2² = 3321322217 is a prime.

It is a super-2 number, since 2×3321322221² = 22062362591416745682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321322271) 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, 1490946 + ... + 1493171.

It is an arithmetic number, because the mean of its divisors is an integer number (322284744).

Almost surely, 2^3321322221 is an apocalyptic number.

It is an amenable number.

3321322221 is a deficient number, since it is larger than the sum of its proper divisors (1835233683).

3321322221 is a wasteful number, since it uses less digits than its factorization.

3321322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984180.

The product of its digits is 864, while the sum is 21.

The square root of 3321322221 is about 57630.9137616262. The cubic root of 3321322221 is about 1492.0052009405.

Adding to 3321322221 its reverse (1222231233), we get a palindrome (4543553454).

The spelling of 3321322221 in words is "three billion, three hundred twenty-one million, three hundred twenty-two thousand, two hundred twenty-one".