111113201321 has 4 divisors (see below), whose sum is σ = 113823279444. Its totient is φ = 108403123200.

The previous prime is 111113201233. The next prime is 111113201363. The reversal of 111113201321 is 123102311111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123102311111 = 13 ⋅9469408547.

It can be written as a sum of positive squares in 2 ways, for example, as 45558768025 + 65554433296 = 213445^2 + 256036^2 .

It is a cyclic number.

It is not a de Polignac number, because 111113201321 - 2²⁶ = 111046092457 is a prime.

It is a super-2 number, since 2×111113201321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111113201321.

It is not an unprimeable number, because it can be changed into a prime (111113201021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355039000 + ... + 1355039081.

It is an arithmetic number, because the mean of its divisors is an integer number (28455819861).

Almost surely, 2^111113201321 is an apocalyptic number.

It is an amenable number.

111113201321 is a deficient number, since it is larger than the sum of its proper divisors (2710078123).

111113201321 is an equidigital number, since it uses as much as digits as its factorization.

111113201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710078122.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111113201321 its reverse (123102311111), we get a palindrome (234215512432).

The spelling of 111113201321 in words is "one hundred eleven billion, one hundred thirteen million, two hundred one thousand, three hundred twenty-one".