32130332021 has 4 divisors (see below), whose sum is σ = 32208890700. Its totient is φ = 32051773344.

The previous prime is 32130332009. The next prime is 32130332023. The reversal of 32130332021 is 12023303123.

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 16541560996 + 15588771025 = 128614^2 + 124855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32130332021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32130331984 and 32130332002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32130332023) 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, 39278726 + ... + 39279543.

It is an arithmetic number, because the mean of its divisors is an integer number (8052222675).

Almost surely, 2^32130332021 is an apocalyptic number.

It is an amenable number.

32130332021 is a deficient number, since it is larger than the sum of its proper divisors (78558679).

32130332021 is an equidigital number, since it uses as much as digits as its factorization.

32130332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78558678.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 32130332021 its reverse (12023303123), we get a palindrome (44153635144).

The spelling of 32130332021 in words is "thirty-two billion, one hundred thirty million, three hundred thirty-two thousand, twenty-one".