32013221020 has 96 divisors (see below), whose sum is σ = 73992574656. Its totient is φ = 11537971200.

The previous prime is 32013220997. The next prime is 32013221021. The reversal of 32013221020 is 2012231023.

It is a junction number, because it is equal to n+sod(n) for n = 32013220985 and 32013221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32013221021) 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 31 ways as a sum of consecutive naturals, for example, 12697360 + ... + 12699880.

It is an arithmetic number, because the mean of its divisors is an integer number (770755986).

Almost surely, 2^32013221020 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 32013221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36996287328).

32013221020 is an abundant number, since it is smaller than the sum of its proper divisors (41979353636).

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

32013221020 is a wasteful number, since it uses less digits than its factorization.

32013221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 32013221020 its reverse (2012231023), we get a palindrome (34025452043).

The spelling of 32013221020 in words is "thirty-two billion, thirteen million, two hundred twenty-one thousand, twenty".