111001012020009 has 24 divisors (see below), whose sum is σ = 160953126201504. Its totient is φ = 73715447400000.

The previous prime is 111001012019987. The next prime is 111001012020071. The reversal of 111001012020009 is 900020210100111.

It is a happy number.

111001012020009 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 111001012020009 - 2⁵ = 111001012019977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111001012019973 and 111001012020000.

It is not an unprimeable number, because it can be changed into a prime (111001012020209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2015134 + ... + 15035384.

It is an arithmetic number, because the mean of its divisors is an integer number (6706380258396).

Almost surely, 2^{111001012020009} is an apocalyptic number.

It is an amenable number.

111001012020009 is a deficient number, since it is larger than the sum of its proper divisors (49952114181495).

111001012020009 is a wasteful number, since it uses less digits than its factorization.

111001012020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13023909 (or 13023906 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 111001012020009 in words is "one hundred eleven trillion, one billion, twelve million, twenty thousand, nine".