111111109201 has 4 divisors (see below), whose sum is σ = 112994348400. Its totient is φ = 109227870004.

The previous prime is 111111109189. The next prime is 111111109237. The reversal of 111111109201 is 102901111111.

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.

It is a cyclic number.

It is not a de Polignac number, because 111111109201 - 2¹⁷ = 111110978129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111109001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941619511 + ... + 941619628.

It is an arithmetic number, because the mean of its divisors is an integer number (28248587100).

Almost surely, 2^111111109201 is an apocalyptic number.

It is an amenable number.

111111109201 is a deficient number, since it is larger than the sum of its proper divisors (1883239199).

111111109201 is an equidigital number, since it uses as much as digits as its factorization.

111111109201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883239198.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 111111109201 in words is "one hundred eleven billion, one hundred eleven million, one hundred nine thousand, two hundred one".