83321221073 has 2 divisors, whose sum is σ = 83321221074. Its totient is φ = 83321221072.

The previous prime is 83321221057. The next prime is 83321221097. The reversal of 83321221073 is 37012212338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82740796609 + 580424464 = 287647^2 + 24092^2 .

It is a cyclic number.

It is not a de Polignac number, because 83321221073 - 2⁴ = 83321221057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83321221573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41660610536 + 41660610537.

It is an arithmetic number, because the mean of its divisors is an integer number (41660610537).

Almost surely, 2^83321221073 is an apocalyptic number.

It is an amenable number.

83321221073 is a deficient number, since it is larger than the sum of its proper divisors (1).

83321221073 is an equidigital number, since it uses as much as digits as its factorization.

83321221073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 83321221073 in words is "eighty-three billion, three hundred twenty-one million, two hundred twenty-one thousand, seventy-three".