20331321299 has 2 divisors, whose sum is σ = 20331321300. Its totient is φ = 20331321298.

The previous prime is 20331321271. The next prime is 20331321337. The reversal of 20331321299 is 99212313302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331321299 - 2¹² = 20331317203 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331321229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165660649 + 10165660650.

It is an arithmetic number, because the mean of its divisors is an integer number (10165660650).

Almost surely, 2^20331321299 is an apocalyptic number.

20331321299 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331321299 is an equidigital number, since it uses as much as digits as its factorization.

20331321299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 20331321299 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred ninety-nine".