13121310111212 has 12 divisors (see below), whose sum is σ = 23522348614296. Its totient is φ = 6400639078560.

The previous prime is 13121310111071. The next prime is 13121310111227. The reversal of 13121310111212 is 21211101312131.

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, 40003994078 + ... + 40003994405.

It is an arithmetic number, because the mean of its divisors is an integer number (1960195717858).

Almost surely, 2^{13121310111212} is an apocalyptic number.

It is an amenable number.

13121310111212 is a deficient number, since it is larger than the sum of its proper divisors (10401038503084).

13121310111212 is a wasteful number, since it uses less digits than its factorization.

13121310111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80007988528 (or 80007988526 counting only the distinct ones).

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

Adding to 13121310111212 its reverse (21211101312131), we get a palindrome (34332411423343).

The spelling of 13121310111212 in words is "thirteen trillion, one hundred twenty-one billion, three hundred ten million, one hundred eleven thousand, two hundred twelve".