21323332197073 has 2 divisors, whose sum is σ = 21323332197074. Its totient is φ = 21323332197072.

The previous prime is 21323332197071. The next prime is 21323332197113. The reversal of 21323332197073 is 37079123332312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18945022297744 + 2378309899329 = 4352588^2 + 1542177^2 .

It is a cyclic number.

It is not a de Polignac number, because 21323332197073 - 2¹ = 21323332197071 is a prime.

Together with 21323332197071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21323332197071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661666098536 + 10661666098537.

It is an arithmetic number, because the mean of its divisors is an integer number (10661666098537).

Almost surely, 2^{21323332197073} is an apocalyptic number.

It is an amenable number.

21323332197073 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323332197073 is an equidigital number, since it uses as much as digits as its factorization.

21323332197073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 46.

The spelling of 21323332197073 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, one hundred ninety-seven thousand, seventy-three".