3321220020 has 24 divisors (see below), whose sum is σ = 9299416224. Its totient is φ = 885658656.

The previous prime is 3321220013. The next prime is 3321220027. The reversal of 3321220020 is 200221233.

It is an interprime number because it is at equal distance from previous prime (3321220013) and next prime (3321220027).

It is a super-2 number, since 2×3321220020² = 22061004842497600800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321220027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27676774 + ... + 27676893.

It is an arithmetic number, because the mean of its divisors is an integer number (387475676).

Almost surely, 2^3321220020 is an apocalyptic number.

3321220020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3321220020 is an abundant number, since it is smaller than the sum of its proper divisors (5978196204).

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

3321220020 is a wasteful number, since it uses less digits than its factorization.

3321220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55353679 (or 55353677 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3321220020 is about 57630.0270692284. The cubic root of 3321220020 is about 1491.9898971972.

Adding to 3321220020 its reverse (200221233), we get a palindrome (3521441253).

The spelling of 3321220020 in words is "three billion, three hundred twenty-one million, two hundred twenty thousand, twenty".