3221502020 has 144 divisors (see below), whose sum is σ = 7836369408. Its totient is φ = 1102080000.

The previous prime is 3221502013. The next prime is 3221502043. The reversal of 3221502020 is 202051223.

It is a self number, because there is not a number n which added to its sum of digits gives 3221502020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11464280 + ... + 11464560.

It is an arithmetic number, because the mean of its divisors is an integer number (54419232).

Almost surely, 2^3221502020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221502020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3918184704).

3221502020 is an abundant number, since it is smaller than the sum of its proper divisors (4614867388).

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

3221502020 is a wasteful number, since it uses less digits than its factorization.

3221502020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3221502020 is about 56758.2771056346. The cubic root of 3221502020 is about 1476.9058225829.

Adding to 3221502020 its reverse (202051223), we get a palindrome (3423553243).

The spelling of 3221502020 in words is "three billion, two hundred twenty-one million, five hundred two thousand, twenty".