20331321007 has 2 divisors, whose sum is σ = 20331321008. Its totient is φ = 20331321006.

The previous prime is 20331320963. The next prime is 20331321041. The reversal of 20331321007 is 70012313302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331321007 - 2¹⁹ = 20330796719 is a prime.

It is a super-2 number, since 2×20331321007² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331321097) 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, 10165660503 + 10165660504.

It is an arithmetic number, because the mean of its divisors is an integer number (10165660504).

Almost surely, 2^20331321007 is an apocalyptic number.

20331321007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331321007 is an equidigital number, since it uses as much as digits as its factorization.

20331321007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

Adding to 20331321007 its reverse (70012313302), we get a palindrome (90343634309).

The spelling of 20331321007 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, seven".