111443101 has 16 divisors (see below), whose sum is σ = 141782400. Its totient is φ = 86835840.

The previous prime is 111443099. The next prime is 111443131. The reversal of 111443101 is 101344111.

It is not a de Polignac number, because 111443101 - 2¹ = 111443099 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 (111443131) 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, 10996 + ... + 18541.

It is an arithmetic number, because the mean of its divisors is an integer number (8861400).

Almost surely, 2^111443101 is an apocalyptic number.

111443101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111443101 is a deficient number, since it is larger than the sum of its proper divisors (30339299).

111443101 is an equidigital number, since it uses as much as digits as its factorization.

111443101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29569 (or 29555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 111443101 is about 10556.6614514249. The cubic root of 111443101 is about 481.2281929513.

Adding to 111443101 its reverse (101344111), we get a palindrome (212787212).

The spelling of 111443101 in words is "one hundred eleven million, four hundred forty-three thousand, one hundred one".