13131110221 has 8 divisors (see below), whose sum is σ = 13581981504. Its totient is φ = 12686458080.

The previous prime is 13131110219. The next prime is 13131110249. The reversal of 13131110221 is 12201113131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13131110221 - 2¹ = 13131110219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131110195 and 13131110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131110281) 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, 1550491 + ... + 1558936.

It is an arithmetic number, because the mean of its divisors is an integer number (1697747688).

Almost surely, 2^13131110221 is an apocalyptic number.

It is an amenable number.

13131110221 is a deficient number, since it is larger than the sum of its proper divisors (450871283).

13131110221 is a wasteful number, since it uses less digits than its factorization.

13131110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109571.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13131110221 its reverse (12201113131), we get a palindrome (25332223352).

The spelling of 13131110221 in words is "thirteen billion, one hundred thirty-one million, one hundred ten thousand, two hundred twenty-one".