13521010105 has 4 divisors (see below), whose sum is σ = 16225212132. Its totient is φ = 10816808080.

The previous prime is 13521010099. The next prime is 13521010177. The reversal of 13521010105 is 50101012531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50101012531 = 83 ⋅603626657.

It can be written as a sum of positive squares in 2 ways, for example, as 6890328064 + 6630682041 = 83008^2 + 81429^2 .

It is not a de Polignac number, because 13521010105 - 2¹³ = 13521001913 is a prime.

It is a super-2 number, since 2×13521010105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352101006 + ... + 1352101015.

It is an arithmetic number, because the mean of its divisors is an integer number (4056303033).

Almost surely, 2^13521010105 is an apocalyptic number.

It is an amenable number.

13521010105 is a deficient number, since it is larger than the sum of its proper divisors (2704202027).

13521010105 is an equidigital number, since it uses as much as digits as its factorization.

13521010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704202026.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 13521010105 its reverse (50101012531), we get a palindrome (63622022636).

The spelling of 13521010105 in words is "thirteen billion, five hundred twenty-one million, ten thousand, one hundred five".