13122412015505 has 8 divisors (see below), whose sum is σ = 16958193989352. Its totient is φ = 9690396565248.

The previous prime is 13122412015441. The next prime is 13122412015513. The reversal of 13122412015505 is 50551021422131.

It can be written as a sum of positive squares in 4 ways, for example, as 2618856050944 + 10503555964561 = 1618288^2 + 3240919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13122412015505 - 2⁶ = 13122412015441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100941630824 + ... + 100941630953.

It is an arithmetic number, because the mean of its divisors is an integer number (2119774248669).

Almost surely, 2^{13122412015505} is an apocalyptic number.

It is an amenable number.

13122412015505 is a deficient number, since it is larger than the sum of its proper divisors (3835781973847).

13122412015505 is a wasteful number, since it uses less digits than its factorization.

13122412015505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201883261795.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 13122412015505 its reverse (50551021422131), we get a palindrome (63673433437636).

The spelling of 13122412015505 in words is "thirteen trillion, one hundred twenty-two billion, four hundred twelve million, fifteen thousand, five hundred five".