111323012321 has 4 divisors (see below), whose sum is σ = 112890942144. Its totient is φ = 109755082500.

The previous prime is 111323012249. The next prime is 111323012323. The reversal of 111323012321 is 123210323111.

It is a happy number.

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 not a de Polignac number, because 111323012321 - 2¹⁰ = 111323011297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111323012293 and 111323012302.

It is not an unprimeable number, because it can be changed into a prime (111323012323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783964805 + ... + 783964946.

It is an arithmetic number, because the mean of its divisors is an integer number (28222735536).

Almost surely, 2^111323012321 is an apocalyptic number.

It is an amenable number.

111323012321 is a deficient number, since it is larger than the sum of its proper divisors (1567929823).

111323012321 is an equidigital number, since it uses as much as digits as its factorization.

111323012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567929822.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111323012321 its reverse (123210323111), we get a palindrome (234533335432).

The spelling of 111323012321 in words is "one hundred eleven billion, three hundred twenty-three million, twelve thousand, three hundred twenty-one".