13121011311 has 8 divisors (see below), whose sum is σ = 17496297984. Its totient is φ = 8746532760.

The previous prime is 13121011243. The next prime is 13121011339. The reversal of 13121011311 is 11311012131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13121011311 - 2¹¹ = 13121009263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121011381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163071 + ... + 229856.

It is an arithmetic number, because the mean of its divisors is an integer number (2187037248).

Almost surely, 2^13121011311 is an apocalyptic number.

13121011311 is a deficient number, since it is larger than the sum of its proper divisors (4375286673).

13121011311 is a wasteful number, since it uses less digits than its factorization.

13121011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404061.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 13121011311 its reverse (11311012131), we get a palindrome (24432023442).

The spelling of 13121011311 in words is "thirteen billion, one hundred twenty-one million, eleven thousand, three hundred eleven".