32001330421 has 4 divisors (see below), whose sum is σ = 32015288812. Its totient is φ = 31987372032.

The previous prime is 32001330407. The next prime is 32001330433. The reversal of 32001330421 is 12403310023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13228220196 + 18773110225 = 115014^2 + 137015^2 .

It is a cyclic number.

It is not a de Polignac number, because 32001330421 - 2⁷ = 32001330293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32001330481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6975756 + ... + 6980341.

It is an arithmetic number, because the mean of its divisors is an integer number (8003822203).

Almost surely, 2^32001330421 is an apocalyptic number.

It is an amenable number.

32001330421 is a deficient number, since it is larger than the sum of its proper divisors (13958391).

32001330421 is a wasteful number, since it uses less digits than its factorization.

32001330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958390.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 32001330421 its reverse (12403310023), we get a palindrome (44404640444).

The spelling of 32001330421 in words is "thirty-two billion, one million, three hundred thirty thousand, four hundred twenty-one".