3332021220 has 144 divisors (see below), whose sum is σ = 11190973248. Its totient is φ = 795674880.

The previous prime is 3332021213. The next prime is 3332021227. The reversal of 3332021220 is 221202333.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3332021213) and next prime (3332021227).

It is a super-2 number, since 2×3332021220² = 22204730821060576800, 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 = 3332021193 and 3332021202.

It is not an unprimeable number, because it can be changed into a prime (3332021227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120102 + ... + 145218.

It is an arithmetic number, because the mean of its divisors is an integer number (77715092).

Almost surely, 2^3332021220 is an apocalyptic number.

3332021220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3332021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5595486624).

3332021220 is an abundant number, since it is smaller than the sum of its proper divisors (7858952028).

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

3332021220 is a wasteful number, since it uses less digits than its factorization.

3332021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25210 (or 25205 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3332021220 is about 57723.6625657104. The cubic root of 3332021220 is about 1493.6055527649.

Adding to 3332021220 its reverse (221202333), we get a palindrome (3553223553).

The spelling of 3332021220 in words is "three billion, three hundred thirty-two million, twenty-one thousand, two hundred twenty".