13111012321 has 8 divisors (see below), whose sum is σ = 14307236064. Its totient is φ = 11915507520.

The previous prime is 13111012307. The next prime is 13111012333. The reversal of 13111012321 is 12321011131.

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 13111012321 - 2¹⁹ = 13110488033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13111012295 and 13111012304.

It is not an unprimeable number, because it can be changed into a prime (13111012351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141240 + ... + 214873.

It is an arithmetic number, because the mean of its divisors is an integer number (1788404508).

Almost surely, 2^13111012321 is an apocalyptic number.

13111012321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13111012321 is a deficient number, since it is larger than the sum of its proper divisors (1196223743).

13111012321 is a wasteful number, since it uses less digits than its factorization.

13111012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359471.

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

Adding to 13111012321 its reverse (12321011131), we get a palindrome (25432023452).

The spelling of 13111012321 in words is "thirteen billion, one hundred eleven million, twelve thousand, three hundred twenty-one".