111444019 has 2 divisors, whose sum is σ = 111444020. Its totient is φ = 111444018.

The previous prime is 111444007. The next prime is 111444029. The reversal of 111444019 is 910444111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111444019 - 2¹⁷ = 111312947 is a prime.

It is a super-2 number, since 2×111444019² = 24839538741744722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111443984 and 111444002.

It is not a weakly prime, because it can be changed into another prime (111444029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722009 + 55722010.

It is an arithmetic number, because the mean of its divisors is an integer number (55722010).

Almost surely, 2^111444019 is an apocalyptic number.

111444019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111444019 is an equidigital number, since it uses as much as digits as its factorization.

111444019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 111444019 is about 10556.7049309905. The cubic root of 111444019 is about 481.2295143020.

The spelling of 111444019 in words is "one hundred eleven million, four hundred forty-four thousand, nineteen".