32130203021 has 6 divisors (see below), whose sum is σ = 37375950510. Its totient is φ = 27540173976.

The previous prime is 32130202999. The next prime is 32130203051. The reversal of 32130203021 is 12030203123.

It can be written as a sum of positive squares in only one way, i.e., 30539310025 + 1590892996 = 174755^2 + 39886^2 .

It is a de Polignac number, because none of the positive numbers 2^k-32130203021 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 (32130203051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 327859166 + ... + 327859263.

It is an arithmetic number, because the mean of its divisors is an integer number (6229325085).

Almost surely, 2^32130203021 is an apocalyptic number.

It is an amenable number.

32130203021 is a deficient number, since it is larger than the sum of its proper divisors (5245747489).

32130203021 is an equidigital number, since it uses as much as digits as its factorization.

32130203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655718443 (or 655718436 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 32130203021 its reverse (12030203123), we get a palindrome (44160406144).

The spelling of 32130203021 in words is "thirty-two billion, one hundred thirty million, two hundred three thousand, twenty-one".