13143221511 has 32 divisors (see below), whose sum is σ = 20579155968. Its totient is φ = 7303841280.

The previous prime is 13143221503. The next prime is 13143221537. The reversal of 13143221511 is 11512234131.

13143221511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13143221511 - 2³ = 13143221503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143221111) 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 in 31 ways as a sum of consecutive naturals, for example, 2781631 + ... + 2786351.

It is an arithmetic number, because the mean of its divisors is an integer number (643098624).

Almost surely, 2^13143221511 is an apocalyptic number.

13143221511 is a deficient number, since it is larger than the sum of its proper divisors (7435934457).

13143221511 is a wasteful number, since it uses less digits than its factorization.

13143221511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351.

The product of its digits is 720, while the sum is 24.

Adding to 13143221511 its reverse (11512234131), we get a palindrome (24655455642).

The spelling of 13143221511 in words is "thirteen billion, one hundred forty-three million, two hundred twenty-one thousand, five hundred eleven".