111112000009 has 2 divisors, whose sum is σ = 111112000010. Its totient is φ = 111112000008.

The previous prime is 111111999979. The next prime is 111112000061. The reversal of 111112000009 is 900000211111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88563974409 + 22548025600 = 297597^2 + 150160^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112000009 - 2⁹ = 111111999497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111111999956 and 111112000001.

It is not a weakly prime, because it can be changed into another prime (111112000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556000004 + 55556000005.

It is an arithmetic number, because the mean of its divisors is an integer number (55556000005).

Almost surely, 2^111112000009 is an apocalyptic number.

It is an amenable number.

111112000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112000009 is an equidigital number, since it uses as much as digits as its factorization.

111112000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 111112000009 in words is "one hundred eleven billion, one hundred twelve million, nine", and thus it is an aban number.