32121020020 has 24 divisors (see below), whose sum is σ = 69780148200. Its totient is φ = 12405359232.

The previous prime is 32121019961. The next prime is 32121020051. The reversal of 32121020020 is 2002012123.

It can be written as a sum of positive squares in 4 ways, for example, as 7046930916 + 25074089104 = 83946^2 + 158348^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27689955 + ... + 27691114.

It is an arithmetic number, because the mean of its divisors is an integer number (2907506175).

Almost surely, 2^32121020020 is an apocalyptic number.

It is an amenable number.

32121020020 is an abundant number, since it is smaller than the sum of its proper divisors (37659128180).

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

32121020020 is a wasteful number, since it uses less digits than its factorization.

32121020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55381107 (or 55381105 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 32121020020 its reverse (2002012123), we get a palindrome (34123032143).

The spelling of 32121020020 in words is "thirty-two billion, one hundred twenty-one million, twenty thousand, twenty".