20333333333213 has 2 divisors, whose sum is σ = 20333333333214. Its totient is φ = 20333333333212.

The previous prime is 20333333333129. The next prime is 20333333333377. The reversal of 20333333333213 is 31233333333302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20197995431524 + 135337901689 = 4494218^2 + 367883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20333333333213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333333333113) 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, 10166666666606 + 10166666666607.

It is an arithmetic number, because the mean of its divisors is an integer number (10166666666607).

Almost surely, 2^{20333333333213} is an apocalyptic number.

It is an amenable number.

20333333333213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333333333213 is an equidigital number, since it uses as much as digits as its factorization.

20333333333213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 35.

Adding to 20333333333213 its reverse (31233333333302), we get a palindrome (51566666666515).

The spelling of 20333333333213 in words is "twenty trillion, three hundred thirty-three billion, three hundred thirty-three million, three hundred thirty-three thousand, two hundred thirteen".