111201011009 has 16 divisors (see below), whose sum is σ = 126735848640. Its totient is φ = 96639480000.

The previous prime is 111201011003. The next prime is 111201011023. The reversal of 111201011009 is 900110102111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111201011009 - 2⁴ = 111201010993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201011003) 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, 1693487 + ... + 1757924.

It is an arithmetic number, because the mean of its divisors is an integer number (7920990540).

Almost surely, 2^111201011009 is an apocalyptic number.

It is an amenable number.

111201011009 is a deficient number, since it is larger than the sum of its proper divisors (15534837631).

111201011009 is a wasteful number, since it uses less digits than its factorization.

111201011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451552.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 111201011009 in words is "one hundred eleven billion, two hundred one million, eleven thousand, nine".