21323331301 has 2 divisors, whose sum is σ = 21323331302. Its totient is φ = 21323331300.

The previous prime is 21323331299. The next prime is 21323331391. The reversal of 21323331301 is 10313332312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20100150625 + 1223180676 = 141775^2 + 34974^2 .

It is a cyclic number.

It is not a de Polignac number, because 21323331301 - 2¹ = 21323331299 is a prime.

Together with 21323331299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323331391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661665650 + 10661665651.

It is an arithmetic number, because the mean of its divisors is an integer number (10661665651).

Almost surely, 2^21323331301 is an apocalyptic number.

It is an amenable number.

21323331301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323331301 is an equidigital number, since it uses as much as digits as its factorization.

21323331301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21323331301 its reverse (10313332312), we get a palindrome (31636663613).

The spelling of 21323331301 in words is "twenty-one billion, three hundred twenty-three million, three hundred thirty-one thousand, three hundred one".