3212221020520 has 64 divisors (see below), whose sum is σ = 7534510410240. Its totient is φ = 1231129056000.

The previous prime is 3212221020497. The next prime is 3212221020529. The reversal of 3212221020520 is 250201222123.

It is a super-2 number, since 2×3212221020520² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3212221020491 and 3212221020500.

It is not an unprimeable number, because it can be changed into a prime (3212221020529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12699022 + ... + 12949501.

It is an arithmetic number, because the mean of its divisors is an integer number (117726725160).

Almost surely, 2^{3212221020520} is an apocalyptic number.

It is an amenable number.

3212221020520 is an abundant number, since it is smaller than the sum of its proper divisors (4322289389720).

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

3212221020520 is a wasteful number, since it uses less digits than its factorization.

3212221020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25648666 (or 25648662 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 3212221020520 its reverse (250201222123), we get a palindrome (3462422242643).

The spelling of 3212221020520 in words is "three trillion, two hundred twelve billion, two hundred twenty-one million, twenty thousand, five hundred twenty".