111123220441 has 16 divisors (see below), whose sum is σ = 117178351488. Its totient is φ = 105175699200.

The previous prime is 111123220399. The next prime is 111123220489. The reversal of 111123220441 is 144022321111.

It is a cyclic number.

It is not a de Polignac number, because 111123220441 - 2²⁷ = 110989002713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123226441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806406 + ... + 934096.

It is an arithmetic number, because the mean of its divisors is an integer number (7323646968).

Almost surely, 2^111123220441 is an apocalyptic number.

It is an amenable number.

111123220441 is a deficient number, since it is larger than the sum of its proper divisors (6055131047).

111123220441 is a wasteful number, since it uses less digits than its factorization.

111123220441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128112.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 111123220441 its reverse (144022321111), we get a palindrome (255145541552).

The spelling of 111123220441 in words is "one hundred eleven billion, one hundred twenty-three million, two hundred twenty thousand, four hundred forty-one".