111303320321 has 4 divisors (see below), whose sum is σ = 111324126144. Its totient is φ = 111282514500.

The previous prime is 111303320299. The next prime is 111303320347. The reversal of 111303320321 is 123023303111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111303320321 is a prime.

It is a super-2 number, since 2×111303320321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111303320293 and 111303320302.

It is not an unprimeable number, because it can be changed into a prime (111303320351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10394885 + ... + 10405586.

It is an arithmetic number, because the mean of its divisors is an integer number (27831031536).

Almost surely, 2^111303320321 is an apocalyptic number.

It is an amenable number.

111303320321 is a deficient number, since it is larger than the sum of its proper divisors (20805823).

111303320321 is an equidigital number, since it uses as much as digits as its factorization.

111303320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20805822.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 111303320321 its reverse (123023303111), we get a palindrome (234326623432).

The spelling of 111303320321 in words is "one hundred eleven billion, three hundred three million, three hundred twenty thousand, three hundred twenty-one".