111220000009 has 4 divisors (see below), whose sum is σ = 117073684240. Its totient is φ = 105366315780.

The previous prime is 111219999991. The next prime is 111220000037. The reversal of 111220000009 is 900000022111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900000022111 = 89 ⋅10112359799.

It is a cyclic number.

It is not a de Polignac number, because 111220000009 - 2¹⁵ = 111219967241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111219999947 and 111220000001.

It is not an unprimeable number, because it can be changed into a prime (111220000079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926842087 + ... + 2926842124.

It is an arithmetic number, because the mean of its divisors is an integer number (29268421060).

Almost surely, 2^111220000009 is an apocalyptic number.

111220000009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

111220000009 is a deficient number, since it is larger than the sum of its proper divisors (5853684231).

111220000009 is an equidigital number, since it uses as much as digits as its factorization.

111220000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853684230.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 111220000009 in words is "one hundred eleven billion, two hundred twenty million, nine", and thus it is an aban number.