3321311220 has 72 divisors (see below), whose sum is σ = 10172512896. Its totient is φ = 877079232.

The previous prime is 3321311219. The next prime is 3321311221. The reversal of 3321311220 is 221131233.

3321311220 is a `hidden beast` number, since 332 + 1 + 311 + 2 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (3321311219) and next prime (3321311221).

It is a super-2 number, since 2×3321311220² = 22062216440195776800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3321311193 and 3321311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321311221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71032 + ... + 108111.

Almost surely, 2^3321311220 is an apocalyptic number.

3321311220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3321311220 is an abundant number, since it is smaller than the sum of its proper divisors (6851201676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3321311220 is a wasteful number, since it uses less digits than its factorization.

3321311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179261 (or 179256 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3321311220 is about 57630.8183179798. The cubic root of 3321311220 is about 1492.0035536480.

Adding to 3321311220 its reverse (221131233), we get a palindrome (3542442453).

The spelling of 3321311220 in words is "three billion, three hundred twenty-one million, three hundred eleven thousand, two hundred twenty".