13531122011 has 16 divisors (see below), whose sum is σ = 15081638400. Its totient is φ = 12034229280.

The previous prime is 13531121999. The next prime is 13531122029. The reversal of 13531122011 is 11022113531.

It is a cyclic number.

It is not a de Polignac number, because 13531122011 - 2¹⁰ = 13531120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531122071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1788665 + ... + 1796213.

It is an arithmetic number, because the mean of its divisors is an integer number (942602400).

Almost surely, 2^13531122011 is an apocalyptic number.

13531122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13531122011 is a deficient number, since it is larger than the sum of its proper divisors (1550516389).

13531122011 is a wasteful number, since it uses less digits than its factorization.

13531122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11074.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 13531122011 its reverse (11022113531), we get a palindrome (24553235542).

The spelling of 13531122011 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-two thousand, eleven".