13121422111111 has 2 divisors, whose sum is σ = 13121422111112. Its totient is φ = 13121422111110.

The previous prime is 13121422111069. The next prime is 13121422111139. The reversal of 13121422111111 is 11111122412131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13121422111111 - 2²⁷ = 13121287893383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121422111711) 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, 6560711055555 + 6560711055556.

It is an arithmetic number, because the mean of its divisors is an integer number (6560711055556).

Almost surely, 2^{13121422111111} is an apocalyptic number.

13121422111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121422111111 is an equidigital number, since it uses as much as digits as its factorization.

13121422111111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 22.

Adding to 13121422111111 its reverse (11111122412131), we get a palindrome (24232544523242).

The spelling of 13121422111111 in words is "thirteen trillion, one hundred twenty-one billion, four hundred twenty-two million, one hundred eleven thousand, one hundred eleven".