32121329 has 2 divisors, whose sum is σ = 32121330. Its totient is φ = 32121328.

The previous prime is 32121307. The next prime is 32121337. The reversal of 32121329 is 92312123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 11916304 = 4495^2 + 3452^2 .

It is an emirp because it is prime and its reverse (92312123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32121329 is a prime.

It is not a weakly prime, because it can be changed into another prime (32121029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060664 + 16060665.

It is an arithmetic number, because the mean of its divisors is an integer number (16060665).

Almost surely, 2^32121329 is an apocalyptic number.

It is an amenable number.

32121329 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121329 is an equidigital number, since it uses as much as digits as its factorization.

32121329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 32121329 is about 5667.5681733879. The cubic root of 32121329 is about 317.8809497273.

The spelling of 32121329 in words is "thirty-two million, one hundred twenty-one thousand, three hundred twenty-nine".