32121333220 has 24 divisors (see below), whose sum is σ = 69780828600. Its totient is φ = 12405480192.

The previous prime is 32121333193. The next prime is 32121333229. The reversal of 32121333220 is 2233312123.

It can be written as a sum of positive squares in 4 ways, for example, as 2645250624 + 29476082596 = 51432^2 + 171686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32121333191 and 32121333200.

It is not an unprimeable number, because it can be changed into a prime (32121333229) 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 7 ways as a sum of consecutive naturals, for example, 27690225 + ... + 27691384.

It is an arithmetic number, because the mean of its divisors is an integer number (2907534525).

Almost surely, 2^32121333220 is an apocalyptic number.

It is an amenable number.

32121333220 is an abundant number, since it is smaller than the sum of its proper divisors (37659495380).

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

32121333220 is a wasteful number, since it uses less digits than its factorization.

32121333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55381647 (or 55381645 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 32121333220 its reverse (2233312123), we get a palindrome (34354645343).

The spelling of 32121333220 in words is "thirty-two billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty".