20011333213 has 2 divisors, whose sum is σ = 20011333214. Its totient is φ = 20011333212.

The previous prime is 20011333189. The next prime is 20011333219. The reversal of 20011333213 is 31233311002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19949585049 + 61748164 = 141243^2 + 7858^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011333213 - 2⁹ = 20011332701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011333219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005666606 + 10005666607.

It is an arithmetic number, because the mean of its divisors is an integer number (10005666607).

Almost surely, 2^20011333213 is an apocalyptic number.

It is an amenable number.

20011333213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011333213 is an equidigital number, since it uses as much as digits as its factorization.

20011333213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20011333213 its reverse (31233311002), we get a palindrome (51244644215).

The spelling of 20011333213 in words is "twenty billion, eleven million, three hundred thirty-three thousand, two hundred thirteen".