12722135155 has 4 divisors (see below), whose sum is σ = 15266562192. Its totient is φ = 10177708120.

The previous prime is 12722135143. The next prime is 12722135161. The reversal of 12722135155 is 55153122721.

12722135155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12722135155 - 2¹⁷ = 12722004083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12722135155.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1272213511 + ... + 1272213520.

It is an arithmetic number, because the mean of its divisors is an integer number (3816640548).

Almost surely, 2^12722135155 is an apocalyptic number.

12722135155 is a deficient number, since it is larger than the sum of its proper divisors (2544427037).

12722135155 is an equidigital number, since it uses as much as digits as its factorization.

12722135155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544427036.

The product of its digits is 21000, while the sum is 34.

Adding to 12722135155 its reverse (55153122721), we get a palindrome (67875257876).

The spelling of 12722135155 in words is "twelve billion, seven hundred twenty-two million, one hundred thirty-five thousand, one hundred fifty-five".