111105641 has 8 divisors (see below), whose sum is σ = 115187520. Its totient is φ = 107040528.

The previous prime is 111105629. The next prime is 111105653. The reversal of 111105641 is 146501111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111105629) and next prime (111105653).

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 111105641 - 2¹⁸ = 110843497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111105671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10190 + ... + 18056.

It is an arithmetic number, because the mean of its divisors is an integer number (14398440).

Almost surely, 2^111105641 is an apocalyptic number.

It is an amenable number.

111105641 is a deficient number, since it is larger than the sum of its proper divisors (4081879).

111105641 is an equidigital number, since it uses as much as digits as its factorization.

111105641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8383.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 111105641 is about 10540.6660605485. Note that the first 3 decimals coincide. The cubic root of 111105641 is about 480.7419673743.

Adding to 111105641 its reverse (146501111), we get a palindrome (257606752).

The spelling of 111105641 in words is "one hundred eleven million, one hundred five thousand, six hundred forty-one".