13111031221206 has 16 divisors (see below), whose sum is σ = 26305839003504. Its totient is φ = 4356380980224.

The previous prime is 13111031221193. The next prime is 13111031221229. The reversal of 13111031221206 is 60212213011131.

It is a super-3 number, since 3×13111031221206³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3490688011 + ... + 3490691766.

It is an arithmetic number, because the mean of its divisors is an integer number (1644114937719).

Almost surely, 2^{13111031221206} is an apocalyptic number.

13111031221206 is an abundant number, since it is smaller than the sum of its proper divisors (13194807782298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111031221206 is a wasteful number, since it uses less digits than its factorization.

13111031221206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6981380095.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 13111031221206 its reverse (60212213011131), we get a palindrome (73323244232337).

The spelling of 13111031221206 in words is "thirteen trillion, one hundred eleven billion, thirty-one million, two hundred twenty-one thousand, two hundred six".