13105420221511 has 32 divisors (see below), whose sum is σ = 13593694233600. Its totient is φ = 12628813092480.

The previous prime is 13105420221461. The next prime is 13105420221559. The reversal of 13105420221511 is 11512202450131.

It is a cyclic number.

It is not a de Polignac number, because 13105420221511 - 2⁹ = 13105420220999 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 13105420221511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13105420221011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402818401 + ... + 402850933.

It is an arithmetic number, because the mean of its divisors is an integer number (424802944800).

Almost surely, 2^{13105420221511} is an apocalyptic number.

13105420221511 is a deficient number, since it is larger than the sum of its proper divisors (488274012089).

13105420221511 is a wasteful number, since it uses less digits than its factorization.

13105420221511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33319.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 13105420221511 its reverse (11512202450131), we get a palindrome (24617622671642).

The spelling of 13105420221511 in words is "thirteen trillion, one hundred five billion, four hundred twenty million, two hundred twenty-one thousand, five hundred eleven".