20013213023191 has 2 divisors, whose sum is σ = 20013213023192. Its totient is φ = 20013213023190.

The previous prime is 20013213023189. The next prime is 20013213023201. The reversal of 20013213023191 is 19132031231002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20013213023191 - 2¹ = 20013213023189 is a prime.

Together with 20013213023189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013213023171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006606511595 + 10006606511596.

It is an arithmetic number, because the mean of its divisors is an integer number (10006606511596).

Almost surely, 2^{20013213023191} is an apocalyptic number.

20013213023191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013213023191 is an equidigital number, since it uses as much as digits as its factorization.

20013213023191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

Adding to 20013213023191 its reverse (19132031231002), we get a palindrome (39145244254193).

The spelling of 20013213023191 in words is "twenty trillion, thirteen billion, two hundred thirteen million, twenty-three thousand, one hundred ninety-one".