3221200020 has 48 divisors (see below), whose sum is σ = 9263132928. Its totient is φ = 835770240.

The previous prime is 3221199997. The next prime is 3221200043. The reversal of 3221200020 is 200021223.

It is an interprime number because it is at equal distance from previous prime (3221199997) and next prime (3221200043).

It is a super-2 number, since 2×3221200020² = 20752259137696000800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 3221199969 and 3221200005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723276 + ... + 727715.

It is an arithmetic number, because the mean of its divisors is an integer number (192981936).

Almost surely, 2^3221200020 is an apocalyptic number.

3221200020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221200020 is an abundant number, since it is smaller than the sum of its proper divisors (6041932908).

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

3221200020 is a wasteful number, since it uses less digits than its factorization.

3221200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451040 (or 1451038 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3221200020 is about 56755.6166383557. The cubic root of 3221200020 is about 1476.8596702505.

Adding to 3221200020 its reverse (200021223), we get a palindrome (3421221243).

The spelling of 3221200020 in words is "three billion, two hundred twenty-one million, two hundred thousand, twenty".