13231212111011 has 4 divisors (see below), whose sum is σ = 13243384340352. Its totient is φ = 13219039881672.

The previous prime is 13231212110969. The next prime is 13231212111023. The reversal of 13231212111011 is 11011121213231.

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 13231212111011 - 2²⁶ = 13231145002147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231212111811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6086113040 + ... + 6086115213.

It is an arithmetic number, because the mean of its divisors is an integer number (3310846085088).

Almost surely, 2^{13231212111011} is an apocalyptic number.

13231212111011 is a deficient number, since it is larger than the sum of its proper divisors (12172229341).

13231212111011 is a wasteful number, since it uses less digits than its factorization.

13231212111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12172229340.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 13231212111011 its reverse (11011121213231), we get a palindrome (24242333324242).

The spelling of 13231212111011 in words is "thirteen trillion, two hundred thirty-one billion, two hundred twelve million, one hundred eleven thousand, eleven".