32303213021 has 2 divisors, whose sum is σ = 32303213022. Its totient is φ = 32303213020.

The previous prime is 32303213003. The next prime is 32303213027. The reversal of 32303213021 is 12031230323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21541432900 + 10761780121 = 146770^2 + 103739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32303213021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32303212984 and 32303213002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32303213027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16151606510 + 16151606511.

It is an arithmetic number, because the mean of its divisors is an integer number (16151606511).

Almost surely, 2^32303213021 is an apocalyptic number.

It is an amenable number.

32303213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

32303213021 is an equidigital number, since it uses as much as digits as its factorization.

32303213021 is an evil number, because the sum of its binary digits is even.

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

Adding to 32303213021 its reverse (12031230323), we get a palindrome (44334443344).

The spelling of 32303213021 in words is "thirty-two billion, three hundred three million, two hundred thirteen thousand, twenty-one".