13131112112011 has 4 divisors (see below), whose sum is σ = 13132324486624. Its totient is φ = 13129899737400.

The previous prime is 13131112112009. The next prime is 13131112112023. The reversal of 13131112112011 is 11021121113131.

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

It is a cyclic number.

It is not a de Polignac number, because 13131112112011 - 2¹ = 13131112112009 is a prime.

It is a super-2 number, since 2×13131112112011² (a number of 27 digits) contains 22 as substring.

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 13131112112011.

It is not an unprimeable number, because it can be changed into a prime (13131112112051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606171060 + ... + 606192721.

It is an arithmetic number, because the mean of its divisors is an integer number (3283081121656).

Almost surely, 2^{13131112112011} is an apocalyptic number.

13131112112011 is a deficient number, since it is larger than the sum of its proper divisors (1212374613).

13131112112011 is a wasteful number, since it uses less digits than its factorization.

13131112112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212374612.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 13131112112011 its reverse (11021121113131), we get a palindrome (24152233225142).

The spelling of 13131112112011 in words is "thirteen trillion, one hundred thirty-one billion, one hundred twelve million, one hundred twelve thousand, eleven".