111123023221 has 8 divisors (see below), whose sum is σ = 129699820800. Its totient is φ = 93221745648.

The previous prime is 111123023201. The next prime is 111123023267. The reversal of 111123023221 is 122320321111.

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 111123023221 - 2¹¹ = 111123021173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123023201) 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 7 ways as a sum of consecutive naturals, for example, 168879646 + ... + 168880303.

It is an arithmetic number, because the mean of its divisors is an integer number (16212477600).

Almost surely, 2^111123023221 is an apocalyptic number.

It is an amenable number.

111123023221 is a deficient number, since it is larger than the sum of its proper divisors (18576797579).

111123023221 is an equidigital number, since it uses as much as digits as its factorization.

111123023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337760003.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111123023221 its reverse (122320321111), we get a palindrome (233443344332).

The spelling of 111123023221 in words is "one hundred eleven billion, one hundred twenty-three million, twenty-three thousand, two hundred twenty-one".