111222019 has 2 divisors, whose sum is σ = 111222020. Its totient is φ = 111222018.

The previous prime is 111222011. The next prime is 111222031. The reversal of 111222019 is 910222111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111222019 - 2³ = 111222011 is a prime.

It is a super-2 number, since 2×111222019² = 24740675020872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111221987 and 111222005.

It is not a weakly prime, because it can be changed into another prime (111222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611009 + 55611010.

It is an arithmetic number, because the mean of its divisors is an integer number (55611010).

Almost surely, 2^111222019 is an apocalyptic number.

111222019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222019 is an equidigital number, since it uses as much as digits as its factorization.

111222019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 111222019 is about 10546.1850448397. The cubic root of 111222019 is about 480.9097604323.

The spelling of 111222019 in words is "one hundred eleven million, two hundred twenty-two thousand, nineteen".