20113133213 has 2 divisors, whose sum is σ = 20113133214. Its totient is φ = 20113133212.

The previous prime is 20113133147. The next prime is 20113133239. The reversal of 20113133213 is 31233131102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18251469604 + 1861663609 = 135098^2 + 43147^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113133213 - 2¹⁰ = 20113132189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113133713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056566606 + 10056566607.

It is an arithmetic number, because the mean of its divisors is an integer number (10056566607).

Almost surely, 2^20113133213 is an apocalyptic number.

It is an amenable number.

20113133213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113133213 is an equidigital number, since it uses as much as digits as its factorization.

20113133213 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 20.

Adding to 20113133213 its reverse (31233131102), we get a palindrome (51346264315).

The spelling of 20113133213 in words is "twenty billion, one hundred thirteen million, one hundred thirty-three thousand, two hundred thirteen".