32215343021 has 2 divisors, whose sum is σ = 32215343022. Its totient is φ = 32215343020.

The previous prime is 32215342987. The next prime is 32215343059. The reversal of 32215343021 is 12034351223.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32081824996 + 133518025 = 179114^2 + 11555^2 .

It is a cyclic number.

It is not a de Polignac number, because 32215343021 - 2¹⁰ = 32215341997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32215343221) 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 as a sum of consecutive naturals, namely, 16107671510 + 16107671511.

It is an arithmetic number, because the mean of its divisors is an integer number (16107671511).

Almost surely, 2^32215343021 is an apocalyptic number.

It is an amenable number.

32215343021 is a deficient number, since it is larger than the sum of its proper divisors (1).

32215343021 is an equidigital number, since it uses as much as digits as its factorization.

32215343021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 32215343021 its reverse (12034351223), we get a palindrome (44249694244).

The spelling of 32215343021 in words is "thirty-two billion, two hundred fifteen million, three hundred forty-three thousand, twenty-one".