13111120321 has 16 divisors (see below), whose sum is σ = 14398527808. Its totient is φ = 11865268800.

The previous prime is 13111120249. The next prime is 13111120327. The reversal of 13111120321 is 12302111131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13111120321 - 2⁷ = 13111120193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111120295 and 13111120304.

It is not an unprimeable number, because it can be changed into a prime (13111120327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148111 + ... + 219451.

It is an arithmetic number, because the mean of its divisors is an integer number (899907988).

Almost surely, 2^13111120321 is an apocalyptic number.

It is an amenable number.

13111120321 is a deficient number, since it is larger than the sum of its proper divisors (1287407487).

13111120321 is a wasteful number, since it uses less digits than its factorization.

13111120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71632.

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

Adding to 13111120321 its reverse (12302111131), we get a palindrome (25413231452).

The spelling of 13111120321 in words is "thirteen billion, one hundred eleven million, one hundred twenty thousand, three hundred twenty-one".